Master Evaluating using the half angle formulas given an equation and constraint

The video tutorial explains how to evaluate expressions using half angle formulas, focusing on sine, cosine, and tangent. It begins with an introduction to the Cartesian coordinate system and the positioning of angles. The tutorial then guides viewers through creating and analyzing triangles, applying the Pythagorean theorem, and using half angle formulas to evaluate trigonometric functions. The video emphasizes understanding the constraints and properties of angles in different quadrants.

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