Answer
= X
Work Step by Step
Simplifying,
Let
$\cos^{–1}(\cos x) = \theta$
$ => \cos x = \cos \theta$, Given $0 \leq x \leq \pi$
$=> \theta = x$
$=> \cos^{–1}(\cos x) = \theta = x$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 4 - Section 4.7 - Inverse Trigonometric Functions - 4.7 Problem Set - Page 262: 82
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