Given two triangles determine the difference of the two angles using cosine

The video tutorial explains how to handle trigonometric functions when values are not on the unit circle. It emphasizes the importance of creating triangles in Quadrant 2 and using the Pythagorean theorem to find missing sides. The tutorial also covers calculating the cosine of U - V using specific formulas, ensuring students understand the process of applying trigonometric identities and theorems.

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