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yoanbarazutti
@yoanbarazutti
December 2023
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J'aurais besoin de votre aide svp ! (merci d'avance)
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itsjcp
Verified answer
- (DC) // (EN)
- (CE) et (DN) sont sécantes en T.
D’après le théorème de Thalès:
TD|TN = TC|TE = DC|EN
4,7|5,2 = TC|2,4 = DC|4,3
TC = 2,4*4,7/5,2
TC ≈ 2,2cm
puisque TC = 2,2cm alors
DC = EN*TC/TE
DC = 4,3*2,2/2,4 ≈ 3,9cm
La longueur TC vaut environ 2,2cm et la longueur DC vaut environ 3,9cm
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Verified answer
- (DC) // (EN)- (CE) et (DN) sont sécantes en T.
D’après le théorème de Thalès:
TD|TN = TC|TE = DC|EN
4,7|5,2 = TC|2,4 = DC|4,3
TC = 2,4*4,7/5,2
TC ≈ 2,2cm
puisque TC = 2,2cm alors
DC = EN*TC/TE
DC = 4,3*2,2/2,4 ≈ 3,9cm
La longueur TC vaut environ 2,2cm et la longueur DC vaut environ 3,9cm