Answer
$\tan \left( t+\pi \right)=$ $\tan t$ and $\cot \left( t+\pi \right)=$ $\cot t$ , so the tangent and cotangent functions are periodic functions. The period of each of these functions is $\pi $.
Work Step by Step
Given above.
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 4.2 - Trigonometric Functions: The Unit Circle - Concept and Vocabulary Check - Page 547: 13
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