Question

Tolong caranya dong! makasih

Answer 1

A. sin (90 + x) + cos(180 - x) + tan (90 + x)
= cos x - cos x - cot x
=  - cot x


b. sin(180 +x) - cot(90 + x) - tan(180 + x)
= - sin x - (-tan x) - (tan x)
= -sin x