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Rider2
@Rider2
May 2019
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Je ne sais pas comment faire, help
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Bonjour,
Calcul de la longueur AI:
Appliquer le théorème de Thalès, on a
CL/CI= TL/AI
50/80= 20/AI
50 AI= 80 x 20
AI= 1 600/50
AI= 32 mm.
Calcul de l'angle AIM:
cos(angle I) = 25 / 32
cos(angle I) = 0.78125
angle AIM = cos-1(0.78125)
angle AIM= 38.62≈ 39°.
1 votes
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c'est pour demain merci d'avance
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Bonjour, j'ai ces 2 exo a faire pr demain et je ne comprend rien. merci du coup de main !
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Je ne trouve pas la longueur du segment ms, merci d'avance !
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Verified answer
Bonjour,Calcul de la longueur AI:
Appliquer le théorème de Thalès, on a
CL/CI= TL/AI
50/80= 20/AI
50 AI= 80 x 20
AI= 1 600/50
AI= 32 mm.
Calcul de l'angle AIM:
cos(angle I) = 25 / 32
cos(angle I) = 0.78125
angle AIM = cos-1(0.78125)
angle AIM= 38.62≈ 39°.