Answer
The identity is verified.
$cot~α~sin~α=cos~α$
Work Step by Step
Use: $cot~α=\frac{cos~α}{sin~α}$
$cot~α~sin~α=\frac{cos~α}{sin~α}sin~α=cos~α$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - 6.2 - Right Triangle Trigonometry - 6.2 Exercises - Page 442: 44
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