#### Answer

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

#### Work Step by Step

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

Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

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

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