Question

Please help I need help

Answer 1

Choice C. sin 105 = sin(60 + 45) = sin 60 cos 45 + cos 45 sin 60

Explanation:

sin(A + B) = sin A cos B + cos A sin B

sin(105) = sin(60 + 45) = sin 60 cos 45 + cos 45 sin 60

Answer: choice C