Answer
$\cos y$
Work Step by Step
Using the trigonometric rules;
$y=\cos^{-1} x$
$\cos y=x$
$x=\cos y$
Therefore, the missing term in the statement is $\cos y$.
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 6 - Inverse Circular Functions and Trigonometric Equations - Section 6.1 Inverse Circular Functions - 6.1 Exercises - Page 257: 3
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