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: 16

Answer

$1$

Work Step by Step

$\dfrac {\cos x}{secx}+\dfrac {\sin x}{cscx}=\dfrac {\cos x}{\dfrac {1}{\cos x}}+\dfrac {\sin x}{\dfrac {1}{\sin x}}=\cos ^{2}x+\sin ^{2}x=1$
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