Learn how to evaluate the secant of an angle using the unit circle

The video tutorial explains the concept of secant in trigonometry, starting with its definition as the hypotenuse divided by the adjacent side. It then relates secant to the unit circle, showing that it can be expressed as 1 over cosine, which corresponds to 1/X. The tutorial proceeds to calculate the secant of π/3 by identifying the X-coordinate on the unit circle, which is 1/2, and simplifies the result by multiplying by the reciprocal, leading to the final answer.

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