Precalculus (10th Edition)

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

Chapter 7 - Analytic Trigonometry - Chapter Review - Review Exercises - Page 505: 14



Work Step by Step

We know that $f(f^{-1}(x))=x$. For inverse sine, the value of $x$ should be in the interval $-1 \leq x\leq 1$. Hence, $\sin(\sin^{-1}(0.9)=0.9.$
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