Answer
amplitude$=4$, period$=10\pi$.
Work Step by Step
Given $y=4cos(\frac{1}{5}x)$, we can find the amplitude$=4$ and period$=\frac{2\pi}{1/5}=10\pi$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 9 - Analytic Geometry - Section 9.6 Polar Equations of Conics - 9.6 Assess Your Understanding - Page 705: 48
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