Solve a trig equation by factoring a perfect square trinomial

The video tutorial covers the process of factoring algebraic expressions, initially without using cosines, and then transitions to factoring with cosines. It explains the concept of a perfect square trinomial and demonstrates solving trigonometric equations where the cosine of X equals 1/2. The tutorial also discusses identifying angles in different quadrants and corrects common mistakes in angle identification.

Identify the reference angle when cosine is positive in the fourth quadrant.

What are the final values of X derived from the cosine function in the text?