#### Answer

$-\sin x\cos \left( \cos x\right) $

#### Work Step by Step

$y=\sin \left( \cos x\right) =y'=\cos \left( \cos x\right) \times \left( \dfrac {d}{dx}\left( \cos x\right) \right) =-\sin x\cos \left( \cos x\right) $

Published by
Cengage

ISBN 10:
1285740629

ISBN 13:
978-1-28574-062-1

$-\sin x\cos \left( \cos x\right) $

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