Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 7 - 7.2 - Verifying Trigonometric Identities - 7.2 Exercises - Page 520: 6



Work Step by Step

Use the identity: $cos^2u+sin^2u=1~~$ (Divide both sides by $sin^2u$) $\frac{cos^2u}{sin^2u}+\frac{sin^2u}{sin^2u}=\frac{1}{sin^2u}$ $cot^2u+1=csc^2u$
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