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Coralieee2
@Coralieee2
May 2019
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Bonjour, j'aurais besoin de vous pour cet exercice de mathématique. Je ne comprends pas. Merci.
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Verified answer
Bonjour,
1)cos74 = BC/AC
= 3,8/AC
AC =3,8/cos74 ≈ 13,8arrondi
2a) ABC rectangle en B
pythagore,
je te laisse faire
b) sin74 =AB/AC
= AB/3,8
AB = 13,8*sin74 = ....
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Thanks 1
Coralieee2
Merci beaucoup !
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Verified answer
Bonjour,1)cos74 = BC/AC
= 3,8/AC
AC =3,8/cos74 ≈ 13,8arrondi
2a) ABC rectangle en B
pythagore,
je te laisse faire
b) sin74 =AB/AC
= AB/3,8
AB = 13,8*sin74 = ....