Precalculus (6th Edition)

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

Chapter 7 - Trigonometric Identities and Equations - 7.2 Verifying Trigonometric Identities - 7.2 Exercises - Page 666: 19


$2\left( 1+\sin t\right) $

Work Step by Step

$\left( 1+\sin t\right) ^{2}+\cos ^{2}t=1+2\sin t+\sin ^{2}t+\cos ^{2}t=2+2\sin t=2\left( 1+\sin t\right) $
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