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.

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

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