Answer
$Period=0.9375~s$
coefficient of $t$: $2.133$
Work Step by Step
$t=\frac{1}{64}~minute=\frac{1}{64}\times60~second=0.9375~second$
The period of $cos~x$ is $2\pi$:
$Bt=2\pi$
$B=\frac{2\pi}{0.9375}=2.133$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - P.S. Problem Solving - Page 506: 9e
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