Question

∠A and ∠B are complementary angles of right triangle ABC, cos A = 0.83, and cos B = 0.55. What is sin A + sin B?




0.28




1




0.38




1.38

Answer 1

@Compassionate @dakid88

Answer 2

Complementary angles
A+B=90 degree
and sin A = cos B
cos B = sin A

Answer 3

sin A = cos B = .55
sin B = cos A = .83
so sin A + sin B = .55 + .83