Solving trigonometric equations with multiple angles

The video tutorial explains how to solve sine equations, specifically when sine of 2X equals -sqrt(3)/2. It begins by identifying angles on the unit circle where sine equals -sqrt(3)/2, then addresses solving for 2X instead of X. The tutorial continues by finding all solutions using coterminal angles and concludes with the final solution for X.

What new insight or understanding did you gain from this video?