Answer
$0.960126984771$
Work Step by Step
Make sure that the setting for angles is "radians".
Keys:
"shift" or "2nd function"
"sin"
numerical keypad: (0.81926439)
"="
yields
$0.960126984771$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 7 - Trigonometric Identities and Equations - 7.5 Inverse Circular Functions - 7.5 Exercises - Page 709: 60
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