Solve this equation without a calculator

The video tutorial explains how to evaluate trigonometric expressions with restrictions, focusing on the unit circle and rationalizing denominators. It covers the importance of understanding quadrant signs and angle restrictions, and provides methods for finding all solutions to trigonometric equations by considering full revolutions around the unit circle.

What are the two angles found that satisfy the equation in the given restriction?

Describe how to find all solutions for the angles derived from the unit circle.