## Precalculus (6th Edition)

Published by Pearson

# Chapter 7 - Trigonometric Identities and Equations - 7.5 Inverse Circular Functions - 7.5 Exercises - Page 709: 62

#### Answer

$1.10823030846$

#### Work Step by Step

Make sure that the setting for angles is "radians". Keys: "shift" or "2nd function" "cos" numerical keypad: (0.44624593) "=" yields $1.10823030846$

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