CosBAH = AH/AB AB^2 = BH^2 + AH^2 AB^2 =8^2 + 6^2 = 100 AB = 10 Cos BAH = 6/10 = 0, 6
АВ^2= 6^2+8^2=100 AB=10 cm. cos BAH = 6/10=0.6