Evaluate the six trigonometric functions for the given real number

The video tutorial covers the evaluation of trigonometric functions for negative angles, specifically focusing on the angle -13π/3. It explains how to find coterminal angles and evaluates sine, cosine, and tangent using the unit circle. The tutorial also demonstrates the calculation of reciprocal trigonometric functions, including cosecant, secant, and cotangent, with a focus on simplifying expressions and rationalizing denominators.

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