Question

Найдите косинус угла BAH(см.рис)

Answer 1

АВ^2= 6^2+8^2=100
AB=10 cm.
cos BAH = 6/10=0.6

Answer 2

CosBAH = AH/AB
AB^2 = BH^2 + AH^2
AB^2 =8^2 + 6^2 = 100
AB = 10
Cos BAH = 6/10 = 0, 6