#### Answer

$1$

#### Work Step by Step

$\sec r\cos r$
$=\frac{1}{\cos r}*\cos r$
$=1$

Published by
Pearson

ISBN 10:
013421742X

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

$1$

$\sec r\cos r$
$=\frac{1}{\cos r}*\cos r$
$=1$

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