Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 5 - Section 5.5 - Additional Identities - 5.5 Problem Set - Page 311: 19

Answer

$2x\sqrt{1-x^2}$

Work Step by Step

$\theta = \sin^{-1}{x}$ $\sin{\theta} =x$ $\cos{\theta} =\sqrt{1-\cos^2{\theta}} = \sqrt{1-x^2}$ $\sin{2\theta} = 2\sin{\theta} \cos{\theta} =2x\sqrt{1-x^2}$
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