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alexandre62290
@alexandre62290
June 2021
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bonjour pouvez vous m'aider exercice 3 merci
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slyz007
Verified answer
1) SinABC=AC/BC
Donc AC=BC*sin35,5=8,6*sin35,5≈5,0
2) Tu peux utiliser le cosinus ou Pythagore.
Par Pythagore :
BC²=AC²+AB²
Donc AB²=BC²-AC²=8,6²-5²=48,96
Donc AB≈7,0
3) ABC=35,5°
ACB=180-90-35,5=54,5°
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Verified answer
1) SinABC=AC/BCDonc AC=BC*sin35,5=8,6*sin35,5≈5,0
2) Tu peux utiliser le cosinus ou Pythagore.
Par Pythagore :
BC²=AC²+AB²
Donc AB²=BC²-AC²=8,6²-5²=48,96
Donc AB≈7,0
3) ABC=35,5°
ACB=180-90-35,5=54,5°