Question

I’m about to cry, HELP ME PLEEEASSSEEEEE!!!!!!

Answer 1

x = 2π, x = π + 2πn

Explanation:

1. (subtract from both sides)

sin(4x) cos(3x) - cos(4x) sin(3x) = 0

2. (Use the identity: -cos(s) sin(t) + cos(t) sin (s) = sin(s - t))

sin (4x - 3x) = 0

3. general solutions for sin(4x - 3x) = 0

4x - 3x = 0 + 2πn,

4x - 3x = π + 2πn