How to evaluate for secant of a negative angle using period as an aide

The video tutorial covers the concept of secant in trigonometry, explaining its relationship with cosine as reciprocals. It delves into coterminal angles, emphasizing their redundancy when graphing. The tutorial also demonstrates graphing angles and reflections over the X-axis, using the unit circle for coordinate identification. Finally, it explains how to calculate secant by rationalizing the denominator, providing a step-by-step approach to understanding these trigonometric concepts.

How do you determine the coordinates of an angle like -π/4?

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What is the final answer when rationalizing the denominator of secant for the angle -π/4?

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