Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 4 - Review Exercises - Page 183: 5

Answer

The amplitude is $|a|=|2|=2.$ The period is $\frac{2\pi}{b}=\frac{2\pi}{1}=2\pi$. There is no vertical translation as $c=0$. There is no phase shift as $d=0$.

Work Step by Step

We first write the equation in the form $y=c+a \sin [b(x-d)]$. Therefore, $y=2\sin (x)$ becomes $y=0+2\sin [1(x-0)]$. Comparing the two equations, $a=2,b=1,c=0$ and $d=0$. The amplitude is $|a|=|2|=2.$ The period is $\frac{2\pi}{b}=\frac{2\pi}{1}=2\pi$. There is no vertical translation as $c=0$. There is no phase shift as $d=0$.
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