Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 13 - The Trigonometric Functions - Chapter Review - Review Exercises - Page 701: 2



Work Step by Step

We have a definition of periodic: A function $y=f(x)$ is periodic if there exists a positive real number $a$ such that $f(x)=f(x+a)$ for all values of x in the domain of the function. $\sin x=\sin(\pi+x)$, $\tan2x=\tan(2x+\pi)$. Hence, all six of the basic trigonometric functions are periodic.
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