Algebra and Trigonometry 10th Edition

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

Chapter 7 - 7.2 - Verifying Trigonometric Identities - 7.2 Exercises - Page 520: 3



Work Step by Step

$tan~u=\frac{sin~u}{cos~u}$ $cot~u=\frac{cos~u}{sin~u}$ $\frac{1}{cot~u}=\frac{1}{\frac{cos~u}{sin~u}}=1·\frac{sin~u}{cos~u}=tan~u$
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