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: 4



Work Step by Step

$cos(\frac{\pi}{2}-u)=sin~u$ $sec(\frac{\pi}{2}-u)=\frac{1}{cos(\frac{\pi}{2}-u)}=\frac{1}{sin~u}=csc~u$
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