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Cassandre13013
@Cassandre13013
May 2019
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Bonjour,
Aidez moi svp, il faut faire les deux exercices en pièce jointe
Merci.
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baudyan
1) La somme des angles d'un triangle vaut 180°.
GEF + EFG + FGE = 180°
EFG = 180 - (GEF + FGE)
EFG =
180 - (90 + 45)
EFG = 45°
2) Cos 45° = EG / FG
Cos 45° = EF / FG
FG = EG / Cos 45°
EF = Cos 45° x (EG / Cos 45°)
EF = EG 7 cm (EFG triangle isocèle)
FG = EG / Cos 45°
FG = 7 / (√2 / 2)
FG = 9,9 cm
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Lista de comentários
GEF + EFG + FGE = 180°
EFG = 180 - (GEF + FGE)
EFG = 180 - (90 + 45)
EFG = 45°
2) Cos 45° = EG / FG
Cos 45° = EF / FG
FG = EG / Cos 45°
EF = Cos 45° x (EG / Cos 45°)
EF = EG 7 cm (EFG triangle isocèle)
FG = EG / Cos 45°
FG = 7 / (√2 / 2)
FG = 9,9 cm