Boundless Algebra

Trigonometric Functions and the Unit Circle

Concept Version 4

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Tangent as a Function

Graph of the tangent function

Graph of the tangent function

The tangent function has vertical asymptotes at $\displaystyle{x = \frac{\pi}{2}}$ and $\displaystyle{x = -\frac{\pi}{2}}$.

Source

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"Algebra and Trigonometry."

http://cnx.org/contents/13ac107a-f15f-49d2-97e8-60ab2e3b519c@5.241 OpenStax CC BY 4.0.