Algebra and Trigonometry 10th Edition

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

Chapter 7 - 7.1 - Using Fundamental Identities - 7.1 Exercises - Page 513: 16


$cot~x~sec~x=csc~x$ (a)

Work Step by Step

$cot~x=\frac{cos~x}{sin~x},~sec~x=\frac{1}{cos~x},~csc~x=\frac{1}{sin~x}$ $cot~x~sec~x=\frac{cos~x}{sin~x}\frac{1}{cos~x}=\frac{1}{sin~x}=csc~x$
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