Answer
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Work Step by Step
Given a cotangent function, we can find one asymptote $x=a$ when the function is undefined. The next asymptote will be $x=a+p$ or $x=a-p$ where $p$ is the period of the function.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 4 - Section 4.6 - Graphs of Other Trigonometric Functions - Exercise Set - Page 611: 69
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