Answer
$42.54^{\circ}$
Work Step by Step
Ensuring that the calculator is in degree mode, we enter $\sin^{-1} (0.67610476)$ into the calculator and solve to the nearest hundred:
$\sin^{-1} (0.67610476)\approx42.54^{\circ}$
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 - Test - Page 287: 4a
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