Master Evaluating the half angle for sine, cosine, and tangent given an equation and constraint

The video tutorial explains how to evaluate expressions using half angle formulas. It begins with setting up a triangle in the third quadrant based on given constraints and then uses the Pythagorean theorem to find the hypotenuse and sides. The tutorial covers evaluating sine, cosine, and tangent of the half angle using respective formulas, emphasizing the importance of sign determination based on quadrants. The process involves simplifying fractions and rationalizing denominators, with a focus on understanding the mathematical principles behind each step.

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