Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 5 - Section 5.1 - Verifying Trigonometric Identities - Concept and Vocabulary Check - Page 658: 4


$\frac{1}{\csc x-1}-\frac{1}{\csc x+1}$ can be simplified using $\left( \csc x-1 \right)\left( \csc x+1 \right)$ as the least common denominator.

Work Step by Step

In this case, the method of the least denominator must be used. Thus, the denominator in the aforementioned case would be $\left( \csc x-1 \right)\left( \csc x+1 \right)$.
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