Question

I have no idea.... please help. And explanation would be me most helpful thing at this point

Answer 1

c) sin 126°

Explanation:

cos(-576°)= -0.80901699437

cos 216°= -0.80901699437

-cos(-36)= -0.80901699437

sin 126°= 0.80901699437

-sin 54°= -0.80901699437

cos 144°= -0.80901699437