Si Cos TAM= 0,4 alors TAM= a) 66 degre b) 76 c) 86 degre

Evaluer en degrees : 7pi/15
A) 1260 degre B) 84 degre C) 126 degre D) 12 degre

Un triangle aigu a pour sinus 0,8 . Calculer son Cosinus
A) cos 0,64 B) cos 06,4 C) cos0,34 D) cos 0,6

Aide moi svpl ! Bissous . Je t'aime .
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