Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 7 - Trigonometric Identities and Equations - Summary Exercises Verifying Trigonometric Identities - Exercises - Page 696: 2


$csc\theta \cos ^{2}\theta +\sin \theta =csc\theta $

Work Step by Step

$csc\theta \cos ^{2}\theta +\sin \theta =\dfrac {\cos ^{2}\theta }{\sin \theta }+\sin \theta =\dfrac {\cos ^{2}\theta +\sin ^{2}\theta }{\sin \theta }=\dfrac {1}{\sin \theta }=csc\theta $
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