<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
        xmlns:xhtml="http://www.w3.org/1999/xhtml"
        xmlns:video="http://www.google.com/schemas/sitemap-video/1.1"
        xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/proof-angle-addition-sine</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:trigonometric-functions-ncert-new/xea4762213f311c5e:trigonometric-functions-of-sum-and-difference-of-two-angles/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-sine" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-sine" />
        
        <lastmod>2021-02-16T13:47:30Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="proof-angle-addition-sine">
            <Attribute name="title">Démonstration de la formule d&#39;addition pour la fonction sinus </Attribute>
            <Attribute name="description">Démonstration de la formule sin(x+y) = sin(x)cos(y) + cos(x)sin(y).</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/egZR3z6x8IGAPeU5EAdzsvyL4RnjWigy9B_OnXbOh9W2mw3jSIKSig9uvNCMNyx0M0UpGJrLARgaoIfUhhq7fZI</video:thumbnail_loc>
            <video:title>Démonstration de la formule d&#39;addition pour la fonction sinus </video:title>
            <video:description>Démonstration de la formule sin(x+y) = sin(x)cos(y) + cos(x)sin(y).</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/ZMNdiMWpaXg.mp4/ZMNdiMWpaXg.mp4</video:player_loc>
            <video:duration>506</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/proof-angle-addition-cosine</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:trigonometric-functions-ncert-new/xea4762213f311c5e:trigonometric-functions-of-sum-and-difference-of-two-angles/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-cosine" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/proof-angle-addition-cosine" />
        
        <lastmod>2021-01-27T17:52:38Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="proof-angle-addition-cosine">
            <Attribute name="title">Démonstration de la formule d&#39;addition pour la fonction cosinus </Attribute>
            <Attribute name="description">Démonstration de la formule cos(x+y) = cos(x)cos(y) - sin(x)sin(y).</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/FasP1nWHi_ADiQthXb5kLHxdJw2ww_abdrkLF2zuHo7X1r1TOAfd37BLg1JOjGdEEn4-K8Bde1hl2aYF_vZzn6Zb</video:thumbnail_loc>
            <video:title>Démonstration de la formule d&#39;addition pour la fonction cosinus </video:title>
            <video:description>Démonstration de la formule cos(x+y) = cos(x)cos(y) - sin(x)sin(y).</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/ADy8TcxtgR4.mp4/ADy8TcxtgR4.mp4</video:player_loc>
            <video:duration>362</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/cosine-addition-identity-example</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:trigonometric-functions-ncert-new/xea4762213f311c5e:trigonometric-functions-of-sum-and-difference-of-two-angles/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/cosine-addition-identity-example" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/cosine-addition-identity-example" />
        
        <lastmod>2021-01-27T17:52:38Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="cosine-addition-identity-example">
            <Attribute name="title">Cosinus de la somme de deux angles - exemple  </Attribute>
            <Attribute name="description">Les trois côtés du triangle rectangle ABC sont donnés, il faut calculer le cosinus de l&#39;angle égal à la somme de l&#39;angle de sommet B et de 60°.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/OirHRBIT_x63S6CU99h-fPyl2X_hDf7HZAM9tO9PaiIgSfaay7XSpcxQW-xYIn2jLljKXyz0qnd0vzmSZ1J7HWFVGA</video:thumbnail_loc>
            <video:title>Cosinus de la somme de deux angles - exemple  </video:title>
            <video:description>Les trois côtés du triangle rectangle ABC sont donnés, il faut calculer le cosinus de l&#39;angle égal à la somme de l&#39;angle de sommet B et de 60°.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/Jda3s8cLX1M.mp4/Jda3s8cLX1M.mp4</video:player_loc>
            <video:duration>314</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/sine-angle-addition-2</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sine-angle-addition-2" />
        
        <lastmod>2021-02-16T13:47:31Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="sine-angle-addition-2">
            <Attribute name="title">Utiliser les formules d&#39;addition - exemple 1</Attribute>
            <Attribute name="description">Comment calculer la valeur exacte de sin(7π/12).</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/o_xDeCSpq43mSQd5hU_QtLfPL_aOTVcqoSpEHWpEvTyY7r0NuomLN2S-Lm-6CNH_pxfD7Nrj-A2xPC4biS0JUzDf</video:thumbnail_loc>
            <video:title>Utiliser les formules d&#39;addition - exemple 1</video:title>
            <video:description>Comment calculer la valeur exacte de sin(7π/12).</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/N01PNda8bLY.mp4/N01PNda8bLY.mp4</video:player_loc>
            <video:duration>515</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/sin-angle-addition</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sin-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/sin-angle-addition" />
        
        <lastmod>2020-11-13T01:32:37Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="sin-angle-addition">
            <Attribute name="title">Utiliser les formules d&#39;addition - exemple 2</Attribute>
            <Attribute name="description">Un exercice où c&#39;est grâce à la formule du sinus d&#39;une somme que l&#39;on calcule la longueur d&#39;un côté d&#39;un triangle rectangle.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/0kdVcX6Mpvir-cq9v11_tntoRjytq-sMnOMszyRvfCRPoE-EtNBAsBOec04yod_jnZ_h9nDke_ZipB8rd3tMo7oohA</video:thumbnail_loc>
            <video:title>Utiliser les formules d&#39;addition - exemple 2</video:title>
            <video:description>Un exercice où c&#39;est grâce à la formule du sinus d&#39;une somme que l&#39;on calcule la longueur d&#39;un côté d&#39;un triangle rectangle.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/wJ9i59_44_o.mp4/wJ9i59_44_o.mp4</video:player_loc>
            <video:duration>320</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/cosine-angle-addition-2</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:trigonometric-functions-ncert-new/xea4762213f311c5e:trigonometric-functions-of-sum-and-difference-of-two-angles/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:trigonometri-problemleri/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-11-viet-nam/xe94abefcd88472f9:ham-so-luong-giac-phuong-trinh-luong-giac-lop-11/xe94abefcd88472f9:cac-phep-bien-doi-luong-giac-lop-11/v/cosine-angle-addition-2" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/cosine-angle-addition-2" />
        
        <lastmod>2020-08-28T01:20:49Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="cosine-angle-addition-2">
            <Attribute name="title">Exercice 3 : Le cosinus de la somme de deux angles dont les cosinus sont donnés</Attribute>
            <Attribute name="description">Calcul de cos(θ+φ) connaissant cos(θ) et cos(φ)</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/gt-svavuQuwt7iAWDnZV6UyGzNNMvbw25U-cxH5Gi0mS_GlRFN35JIfd91yrzf9VquOEKamykMfIkpy0E3aQpVrckA</video:thumbnail_loc>
            <video:title>Exercice 3 : Le cosinus de la somme de deux angles dont les cosinus sont donnés</video:title>
            <video:description>Calcul de cos(θ+φ) connaissant cos(θ) et cos(φ)</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/qQjfTVEVQgM.mp4/qQjfTVEVQgM.mp4</video:player_loc>
            <video:duration>434</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/trigonometry-identity-review-fun</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="de"
                    href="https://de.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/class-12-bridge/x09646558c1ff0797:trigonometry-and-complex-numbers/x09646558c1ff0797:trigonometry/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/12-sinif/x3f633b7df05569db:3-unite-trigonometri/x3f633b7df05569db:iki-kat-aci-formulleri/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-11-viet-nam/xe94abefcd88472f9:ham-so-luong-giac-phuong-trinh-luong-giac-lop-11/xe94abefcd88472f9:cac-phep-bien-doi-luong-giac-lop-11/v/trigonometry-identity-review-fun" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/trigonometry-identity-review-fun" />
        
        <lastmod>2024-06-25T07:36:12.365835605Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="trigonometry-identity-review-fun">
            <Attribute name="title">Identités conséquences des deux formules d&#39;addition</Attribute>
            <Attribute name="description">Le sinus et le cosinus de la différence (a - b) et de l&#39;angle double 2a.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/q779WlSevH6c0FCkG6uJcgjnP-3oXG6igoQNkUMmaUC_iYs2ef5ZtpHgGVMziteKMOmz7gjlpqZzF16rq8z2hxo</video:thumbnail_loc>
            <video:title>Identités conséquences des deux formules d&#39;addition</video:title>
            <video:description>Le sinus et le cosinus de la différence (a - b) et de l&#39;angle double 2a.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/0bMH2BpkeoY.mp4/0bMH2BpkeoY.mp4</video:player_loc>
            <video:duration>667</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/e/applying-angle-addition-formulas</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="de"
                    href="https://de.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="ro"
                    href="https://ro.khanacademy.org/math/recapitulare-pentru-bac/x2c6df36abf3fe8b5:trigonometrie/x2c6df36abf3fe8b5:ecuatii-trigonometrice/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/e/applying-angle-addition-formulas" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/e/applying-angle-addition-formulas" />
        
        <lastmod>2023-01-18T11:48:34.062940776Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="applying-angle-addition-formulas">
            <Attribute name="title">Utiliser les formules d&#39;addition 2</Attribute>
            <Attribute name="description">Calculer la valeur exacte du sinus, du cosinus et de la tangente d&#39;angles en utilisant les formules d&#39;addition.</Attribute>
            <Attribute name="author">Tomer Gal</Attribute>
            <Attribute name="type">exercise</Attribute>
            
            </DataObject>
        </PageMap>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/double-angle-formula-for-cosine-example-c</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:trigonometric-functions-ncert-new/xea4762213f311c5e:trigonometric-functions-of-sum-and-difference-of-two-angles/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/12-sinif/x3f633b7df05569db:3-unite-trigonometri/x3f633b7df05569db:sinus-ve-kosinus-teoremleri/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/double-angle-formula-for-cosine-example-c" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/v/double-angle-formula-for-cosine-example-c" />
        
        <lastmod>2021-02-08T09:07:16Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="double-angle-formula-for-cosine-example-c">
            <Attribute name="title">Cosinus de l&#39;angle double </Attribute>
            <Attribute name="description">Quel que soit θ, cos(2θ) = cos²θ-sin²θ. Par exemple, cos(60) = cos²(30)-sin²(30). Dans cette vidéo, un exemple d&#39;utilisation de cette formule.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/152bMm2bPz9qxWTKf3kD6x5ejlJKR-tLzP7uUkfHeN7OOT9OJRqTPVW19HlJJNGXMZ8DK5MLDrNHrPU91DCpPMs</video:thumbnail_loc>
            <video:title>Cosinus de l&#39;angle double </video:title>
            <video:description>Quel que soit θ, cos(2θ) = cos²θ-sin²θ. Par exemple, cos(60) = cos²(30)-sin²(30). Dans cette vidéo, un exemple d&#39;utilisation de cette formule.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/fn6uhbdns3A.mp4/fn6uhbdns3A.mp4</video:player_loc>
            <video:duration>208</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/cosine-angle-addition</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/cosine-angle-addition" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/cosine-angle-addition" />
        
        <lastmod>2021-02-08T09:07:16Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="cosine-angle-addition">
            <Attribute name="title">Utiliser les formules d&#39;addition - exemple 3</Attribute>
            <Attribute name="description">Sachant que cos(2θ)=C, comment exprimer sin(θ) en fonction de C.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/yutnOMedJwIUeAFZ8Qz18KIALvNCxYqN6nv8E1ZsHTsB8ASMUqXBXDWW67auDJ6fcf7JyxDr0-ViUYSqX17h7g92</video:thumbnail_loc>
            <video:title>Utiliser les formules d&#39;addition - exemple 3</video:title>
            <video:description>Sachant que cos(2θ)=C, comment exprimer sin(θ) en fonction de C.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/prAgUr7e0BI.mp4/prAgUr7e0BI.mp4</video:player_loc>
            <video:duration>372</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/e/trig_addition_identities</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="de"
                    href="https://de.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:angle-addition/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/intro-to-trig-angle-addition-identities/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="ro"
                    href="https://ro.khanacademy.org/math/recapitulare-pentru-bac/x2c6df36abf3fe8b5:trigonometrie/x2c6df36abf3fe8b5:ecuatii-trigonometrice/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/xfefa5515:angle-addition-identities/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:aci-toplam-formulleri/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/e/trig_addition_identities" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/intro-to-trig-angle-addition-identities-precalc/e/trig_addition_identities" />
        
        <lastmod>2026-03-25T09:04:39.615239128Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="trig_addition_identities">
            <Attribute name="title">Utiliser les formules d&#39;addition 1</Attribute>
            <Attribute name="description">S&#39;entraîner à utiliser les formules de la somme de deux angles et les formules de l&#39;angle double.</Attribute>
            <Attribute name="author">Mark Wittels</Attribute>
            <Attribute name="type">exercise</Attribute>
            
            </DataObject>
        </PageMap>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/using-the-tangent-angle-addition-identity</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/using-the-tangent-angle-addition-identity" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/using-the-tangent-angle-addition-identity" />
        
        <lastmod>2023-01-18T11:48:34.062940776Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="using-the-tangent-angle-addition-identity">
            <Attribute name="title">Utiliser les formules d&#39;addition pour la tangente</Attribute>
            <Attribute name="description">On calcule la valeur exacte de tan (13pi/12), sans calculatrice, en utilisant les formules d&#39;addition.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/ka_thumbnails_cache/bbcd2060-2bc7-43d9-8c05-a2953c91223c_1280_720_base.png</video:thumbnail_loc>
            <video:title>Utiliser les formules d&#39;addition pour la tangente</video:title>
            <video:description>On calcule la valeur exacte de tan (13pi/12), sans calculatrice, en utilisant les formules d&#39;addition.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/H_YmoJhaRDc.mp4/H_YmoJhaRDc.mp4</video:player_loc>
            <video:duration>389</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/10-klas/x3076d29e95acc119:reshavane-na-triagalnik/x3076d29e95acc119:osnovni-trig-tazhdestva-0-180/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/12-sinif/x3f633b7df05569db:3-unite-trigonometri/x3f633b7df05569db:iki-kat-aci-formulleri/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="ur"
                    href="https://ur.khanacademy.org/math/grade-9-math-snc-aligned/x7d7ac579250c3cd1:trigonometric-identities/x7d7ac579250c3cd1:untitled-45/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/v/examples-using-pythagorean-identities-to-simplify-trigonometric-expressions" />
        
        <lastmod>2020-11-26T16:42:30Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="examples-using-pythagorean-identities-to-simplify-trigonometric-expressions">
            <Attribute name="title">Simplifier une expression trigonométrique </Attribute>
            <Attribute name="description">Grâce à la formule sin²θ+cos²θ=1, on établit, par exemple, que (1-sin²θ)(cos²θ) =(cos²θ)(cos²θ)= cos⁴θ.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/sJkKTKgAQ1k1DMzvwj94REYxLb9RwVGEtv6SzA_4cI4fYcyVdId0ECd5jgSjpxKqVG3fbK-WeuICNp7iEnI7BpQ</video:thumbnail_loc>
            <video:title>Simplifier une expression trigonométrique </video:title>
            <video:description>Grâce à la formule sin²θ+cos²θ=1, on établit, par exemple, que (1-sin²θ)(cos²θ) =(cos²θ)(cos²θ)= cos⁴θ.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/V7xy2HcpM5I.mp4/V7xy2HcpM5I.mp4</video:player_loc>
            <video:duration>187</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/iit-jee-trigonometric-constraints</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:trigonometri-problemleri/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/iit-jee-trigonometric-constraints" />
        
        <lastmod>2021-02-08T09:07:15Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="iit-jee-trigonometric-constraints">
            <Attribute name="title">Défi trigonométrique : un problème avec plusieurs contraintes </Attribute>
            <Attribute name="description">On résout un problème algébrique compliqué :  problème 47  extrait de  2010 JEE papier I Examen.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/qz-vJXyzEm9wtmcpca2khmPp3qNkyzMDwBp2YWoYRu9Sx_y0UscfmOccoQV5NAwh9LMwUuE44gVVzrlIqHQXwWw6</video:thumbnail_loc>
            <video:title>Défi trigonométrique : un problème avec plusieurs contraintes </video:title>
            <video:description>On résout un problème algébrique compliqué :  problème 47  extrait de  2010 JEE papier I Examen.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/6Ia8DKtxHks.mp4/6Ia8DKtxHks.mp4</video:player_loc>
            <video:duration>769</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/trigonometric-system-example</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/11-sinif/xa522689791108f17:1-unite/xa522689791108f17:trigonometri-problemleri/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-11-viet-nam/xe94abefcd88472f9:ham-so-luong-giac-phuong-trinh-luong-giac-lop-11/xe94abefcd88472f9:cac-phep-bien-doi-luong-giac-lop-11/v/trigonometric-system-example" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/trigonometry/trig-equations-and-identities/challenge-trig-problems/v/trigonometric-system-example" />
        
        <lastmod>2021-02-08T09:07:16Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="trigonometric-system-example">
            <Attribute name="title">Défi trigonométrique : système d&#39;équations avec un paramètre</Attribute>
            <Attribute name="description">On résout un problème algébrique compliqué :  problème 55  extrait de  2010 JEE papier I Examen.</Attribute>
            <Attribute name="author">Sal Khan</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/GMvsWpjbfNiFQrmytfHTBCWY9J6CsoFtupkF_ZpscUdc0BDrukmKyZXv5jBSDocw2BZLNjYjWOASDK9vciMsPA-m</video:thumbnail_loc>
            <video:title>Défi trigonométrique : système d&#39;équations avec un paramètre</video:title>
            <video:description>On résout un problème algébrique compliqué :  problème 55  extrait de  2010 JEE papier I Examen.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/Bf6PsID_txM.mp4/Bf6PsID_txM.mp4</video:player_loc>
            <video:duration>662</video:duration>
            <video:category>Identités trigonométriques et formules d&amp;#39;addition</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/a/trig-identity-reference</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/11-klas-bg-obshtoobr/x08468fe00892ce7f:trigonometria/x08468fe00892ce7f:formuli-sbor-razlika-ugli-udvoen-ugul/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="da"
                    href="https://da.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="de"
                    href="https://de.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-5eme-secondaire6h2/xf3d9b8ebf1ce514b:trigonometrie/xf3d9b8ebf1ce514b:identites-trigonometriques-et-formules-d-addition/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="hu"
                    href="https://hu.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:trig/x9e81a4f98389efdf:using-trig-id/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="ro"
                    href="https://ro.khanacademy.org/math/recapitulare-pentru-bac/x2c6df36abf3fe8b5:trigonometrie/x2c6df36abf3fe8b5:ecuatii-trigonometrice/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="ru"
                    href="https://ru.khanacademy.org/math/trigonometry/trig-equations-and-identities/using-trig-identities/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/10-klas/xd54208cece3d7f94:trigonometrichn-funkts/xd54208cece3d7f94:formuli-dodavannya/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="ur"
                    href="https://ur.khanacademy.org/math/grade-9-math-snc-aligned/x7d7ac579250c3cd1:trigonometric-identities/x7d7ac579250c3cd1:untitled-45/a/trig-identity-reference" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/trig-equations-and-identities-precalc/using-trig-identities-precalc/a/trig-identity-reference" />
        
        <lastmod>2025-02-04T15:09:49.550946976Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="trig-identity-reference">
            <Attribute name="title">Formulaire de trigonométrie</Attribute>
            <Attribute name="description">Toutes les formules (ou presque) </Attribute>
            
            <Attribute name="type">article</Attribute>
            
            </DataObject>
        </PageMap>
        
    </url>
    
</urlset>
