Answer
$\dfrac {1+\cos ^{2}x}{\sin ^{2}x}$
Work Step by Step
$\cot ^{2}x+csc^{2}x=\dfrac {\cos ^{2}x}{\sin ^{2}x}+\dfrac {1}{\sin ^{2}x}=\dfrac {1+\cos ^{2}x}{\sin ^{2}x}$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 7 - Trigonometric Identities and Equations - Quiz - Page 683: 2
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