#### Answer

$-1$.

#### Work Step by Step

As we can see from the attached graph, as $x$ gets closer and closer to $\pi$ from the left and the right, the value of the function (the $y$-value) gets closer and closer to $-1$. Thus the limit is $-1$.

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Published by
Pearson

ISBN 10:
0-32193-104-1

ISBN 13:
978-0-32193-104-7

$-1$.

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