(Solved): Use an addition formula to derive the identity. sin x + = COS X 2 Which addition formula should ...

Use an addition formula to derive the identity. ? sin x + = COS X 2 Which addition formula should be used? cos (A + B) sin (A + B) What is the addition formula for sin (A + B)? A. sin (A + B) = cos A cos B- sin A sin B sin (A + B) = sin A cos B + B. cos A sin B C. sin (A + B) = cos A cos B + sin A sin B D. sin (A + B) = sin A cos B - cos A sin B E. sin (A + B) = sin A sin B - cos A cos B F. sin (A + B) = cos A sin B- sin A cos B Apply the addition formula for sin (A + B) to the left side of the given identity. ? sin x + = = sin COS + COS sin