## Algebra and Trigonometry 10th Edition

Published by Cengage Learning

# Chapter 7 - 7.1 - Using Fundamental Identities - 7.1 Exercises - Page 513: 14

#### Answer

$cot^2~x-csc^2x=-1$ (b)

#### Work Step by Step

One of the Pythagorean Identities is: $1+cot^2~x=csc^2~x$ $cot^2~x-csc^2x=-1$

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