#### Answer

False

#### Work Step by Step

$\sin 39^{\circ}48' + \cos 39^{\circ} 48' =? 1$
$0.6401096995 + 0.7682835236 =? 1$
$1.408393223 \ne 1$

Published by
Pearson

ISBN 10:
0321671775

ISBN 13:
978-0-32167-177-6

False

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