Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 5 - Trigonometric Identities - Section 5.2 Verifying Trigonometric Identities - 5.2 Exercises - Page 208: 34



Work Step by Step

$$A=\cot\alpha\sin\alpha$$ - Quotient Identity: $$\cot\alpha=\frac{\cos\alpha}{\sin\alpha}$$ That makes $A$ into $$A=\frac{\cos\alpha}{\sin\alpha}\times\sin\alpha$$ $$A=\cos\alpha$$
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