Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 6 - Analytic Trigonometry - Section 6.4 Trigonometric Identities - 6.4 Assess Your Understanding - Page 497: 22

Answer

See below.

Work Step by Step

$LHS=1+cot^2(-\theta)=1+cot(-\theta)cot(-\theta)=1+cot(\theta)cot(\theta)=1+cot^2(\theta)=csc^2(\theta)=RHS$
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