Evaluate trig functions using a right triangle and given the sin

The video tutorial explains how to evaluate trigonometric functions using a right triangle. It begins with an introduction to the sine function and its relation to the triangle's sides. The instructor then describes the components of a right triangle and uses the Pythagorean theorem to calculate the cosine of an angle. The tutorial also covers reciprocal trigonometric functions, such as cosecant and secant, and demonstrates how to calculate tangent and cotangent, including rationalizing denominators. The session concludes with a recap of the six trigonometric functions and their relationships.

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