Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 7 - Analytic Trigonometry - 7.1 The Inverse Sine, Cosine, and Tangent Functions - 7.1 Assess Your Understanding - Page 450: 11



Work Step by Step

If $-1\leq x \leq 1$ then $\sin{(\sin^{-1}{x})}=x$ and $\cos{(\cos^{-1}{x})}=x.$ Hence if $x=0$, then both functions are equal to $0$. Therefore the given statement is true.
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