Question

Simplify the expression: cot x sin x - sin quantity pi divided by two minus x. + cos x

cos x

sin x

2 sin x

2 cos x

Answer 1

Turn cot(x) into sines and cosines and then know that:
\[\sin(\frac{ \pi }{ 2 }- \theta ) = \cos \theta\]

Answer 2

and cot = 1/tan = cos/sin