Using half angle formulas to solve trigonometric equations

The video tutorial explains how to solve a trigonometric equation using the zero product property. It begins with an introduction to the problem and the need to isolate terms. The instructor then applies a given formula, emphasizing the importance of isolating the square root before squaring both sides. The process involves factoring the equation and using the unit circle to find solutions within a specified interval. The tutorial concludes with a discussion on factoring techniques and verifying solutions.

In the context of the quiz, how do you factor the equation 2cos²X - 3cosX + 1?

What is the significance of the unit circle in solving trigonometric equations?

How do you determine the values of X when cosine equals 1 and 1/2?