#### Answer

$0$

#### Work Step by Step

$\cos ^{-1}\left( \cos x\right) =x\Rightarrow \cos ^{-1}\left( \cos 0\right) =0$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$0$

$\cos ^{-1}\left( \cos x\right) =x\Rightarrow \cos ^{-1}\left( \cos 0\right) =0$

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