Entourer la lettre correspond a la bonne reponse : 1) l'arc de 301gr est dans : a) 1ere quadrant b) 2eme quadrant c) 3eme quadrant d) 4eme quadrant

2) ABC est triangle equilateral de cote 10cm et hauteur BH. Calculer la longueur BH
a) BH= 5 Racine carre de 3 ! B) BH= 5 Racine carree de 100-25 , C) Ab= 4/cos40 degre D) AB= cos40 degre / 4

3) si Sin40degre = AB/4 Allors TAM=
a) 60 degre b) 76 degre c) 86 degre

4)
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