Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 14 - Trigonometric Identities and Equations - 14-1 Trigonometric Identities - Practice and Problem-Solving Exercises: 19

Answer

$$-\cot^{2}\theta$$

Work Step by Step

Use the Pythagorean Identity: $$1+\cot^{2}\theta=\csc^{2}\theta$$ Rearrange terms: $$1-\csc^{2}\theta=-\cot^{2}\theta$$
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