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Bonjour12311
@Bonjour12311
May 2019
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Aidez moi svp Le gagnant gagne plein de points merci
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antokun
Exercice 1:
1)
Comme ABC est un triangle rectangle on peut utiliser la trygonometris
Pour sa on commence par calculer l angle BAC
sin(BAC)=BC/BA
sin(BAC)=7.2/9.2
(BAC)=sin-1(7.2/9.7)=47°
Maintenant que l on connait cette angles on va pas pouvoir calculer AC
cos(47°)=AC/9.2
AC=9.2*cos(47°)
AC=6.3
DOnc AC = 6.3
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1)
Comme ABC est un triangle rectangle on peut utiliser la trygonometris
Pour sa on commence par calculer l angle BAC
sin(BAC)=BC/BA
sin(BAC)=7.2/9.2
(BAC)=sin-1(7.2/9.7)=47°
Maintenant que l on connait cette angles on va pas pouvoir calculer AC
cos(47°)=AC/9.2
AC=9.2*cos(47°)
AC=6.3
DOnc AC = 6.3