Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 4 - Section 4.1 - Basic Graphs - 4.1 Problem Set - Page 192: 12


cosine and secant

Work Step by Step

Only cosine and secant functions are even. Because,$\,\, cos(-x) = cos(x)$, and , $\,\,sec(-x) = sec(x)$. The rest of the functions are odd functions.
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