Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.7 Apply Double-Angle and Half-Angle Formulas - Guided Practice for Examples 1, 2, and 3 - Page 956: 8


$2\cos x(1-\cos x)$

Work Step by Step

Using the given formula and the known values: $\sin 2x\tan \frac{x}{2}=2\sin x\cos x\frac{1-\cos x}{\sin x}=2\cos x(1-\cos x)$
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