Answer
amplitude$=1$, period$= 4\pi$, phase shift$=-\pi$.
See graph.
Work Step by Step
1. Given $y=-cos(\frac{1}{2}x+\frac{\pi}{2})$, we find the amplitude$=1$, period$=\frac{2\pi}{1/2}=4\pi$, phase shift$=-\pi$.
2. See graph.
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 5 - Trigonometric Functions - Chapter Review - Review Exercises - Page 458: 36
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