Answer
$15$ cycles/min
Work Step by Step
From period of $4$ seconds per cycle, the number of cycles per minute is:
$$\frac{1~cycle}{4~sec}\times\frac{60~sec}{1~min}=15~cycles/min$$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - 6.4 - Graphs of Sine and Cosine Functions - 6.4 Exercises - Page 465: 79b
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