Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 6 - Inverse Circular Functions and Trigonometric Equations - Section 6.4 Equations Involving Inverse Trigonometric Functions - 6.4 Exercises - Page 279: 5

Answer

$x=arccos\frac{y}{5}$

Work Step by Step

$y=5cosx$ Need to solve $x$ in order to find this divide the above equation by 5 both sides. $cosx=\frac{y}{5}$ Apply definition of arccosine. $x=arccos\frac{y}{5}$
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