## Trigonometry (10th Edition)

Published by Pearson

# Chapter 4 - Graphs of the Circular Functions - Section 4.1 Graphs of the Sine and Cosine Functions - 4.1 Exercises: 48b

#### Answer

$20$

#### Work Step by Step

The amplitude of the given graph is one-half of the difference between the highest (maximum) and the lowest (minimum) values. The highest value in the graph is 120 while the lowest is 80. Thus, Amplitude = $\frac{1}{2}(120−80)=\frac{1}{2}(40)=20$

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