Question

Solve 2-3cos x=5+3cox x for 0 degree <= x <= 180 degree

Answer 1

You have the following expression given in the problem above: 2-3co x=5+3cosx. To solve it, you must apply the proccedure shown below:
You have:
2-3cosx=5+3cosx
Solve for cosx:
-3cosx-3cosx=5-2
-6cosx=3
cosx=3/-6
cosx=-1/2
x=120°

The answer is: 120°