How to evaluate the difference of two angles for sine

The video tutorial explains how to solve trigonometric problems using angle subtraction and the unit circle. It covers the selection of angles that can be evaluated on the unit circle, introduces the formula for the sine of subtracted angles, and demonstrates its application with specific angles. The tutorial also includes evaluating sine and cosine values, simplifying expressions, and correcting errors.

What is the significance of using angles that can be evaluated on the unit circle?

Explain the formula for the sine of the subtraction of two angles.

How do you evaluate the sine and cosine of specific angles like 210 degrees and 45 degrees?

What is the coordinate point for 210 degrees on the unit circle?

Describe the process of combining sine and cosine values in the context of the given problem.

What common factors can be identified when simplifying the final answer?

How can you check your answer after solving a trigonometric equation?