Learn to evaluate the limit of tangent

The video tutorial explains the tangent function as X approaches π, using direct substitution and the unit circle. It describes how the tangent of an angle is determined by the Y over X coordinates on the unit circle. The tutorial also covers graphing the tangent function, highlighting its period and how it crosses at zero. Various methods for evaluating the tangent function are discussed, including using a graphing calculator.

Describe the process of evaluating the tangent function using direct substitution.

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What is the significance of the point (-1, 0) on the unit circle in relation to the tangent function?

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