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: 13



Work Step by Step

$\tan x\left( \cot x+cscx\right) =\tan x\cot x+\tan xcscx=1+\dfrac {\sin x}{\cos x}\times \dfrac {1}{\sin x}=1+\dfrac {1}{\cos x}=1+secx$
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