Find the value of x. with solution, plss ​

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°