Question

The value of sin ${90}^{\circ }$ and cos $0^{\circ }$ are:

• A. 0,1
• B. 1,0
• C. 0,0
• D. 1,1

Answer 1

The correct option is D

1,1

cos A and sin A exists for A = $0^{\circ }$ and A = ${90}^{\circ }$.

sin${90}^{\circ }$ = cos $0^{\circ }$ = 1 (complementary angles)