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EnoraCadou2
@EnoraCadou2
June 2022
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Salut, quelqu'un pourrait m'aider pour cette exo please?!
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Liamedery
Bonjour,
AD = 3m
Cherchons AC:
Le triangle ABC est rectangle en A
L’hypoténuse est BC
D’après le théorèmes Pythagore :
BC² = AB ²+AC ²
3 ²=1,8 ²+AC ²
AC ²=3 ²- 1,8 ² = 9 - 3,24= 5,76
AC= √5,76 = 2,4m
DC=AD - AC = 3 - 2,4= 0,6m = 60cm
L’extrémité de l’échelle est descendue de 60cm.
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Lista de comentários
AD = 3m
Cherchons AC:
Le triangle ABC est rectangle en A
L’hypoténuse est BC
D’après le théorèmes Pythagore :
BC² = AB ²+AC ²
3 ²=1,8 ²+AC ²
AC ²=3 ²- 1,8 ² = 9 - 3,24= 5,76
AC= √5,76 = 2,4m
DC=AD - AC = 3 - 2,4= 0,6m = 60cm
L’extrémité de l’échelle est descendue de 60cm.