Answer
(a) $f(\frac{\pi}{2})=1$.
(b) $ f(-\frac{\pi}{2})=-1$.
Work Step by Step
(a) Based on the given graph, we can find the local maximum $f(\frac{\pi}{2})=1$.
(b) The local minimum $f(-\frac{\pi}{2})=-1$.
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 1 - Functions and Their Graphs - Section 1.3 Properties of Functions - 1.3 Assess Your Understanding - Page 75: 31
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