Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.5 - Graphs of Sine and Cosine Functions - Exercise Set - Page 596: 43

Answer

Please see below.
1583733580

Work Step by Step

Please note that a cosine function $y=A\sin (Bx-C)$ has amplitude $|A|$, period $\frac{2\pi }{B}$, and phase shift $\frac{C}{B}$. So the function $y=\cos (x-\frac{\pi }{2})$ has amplitude $|1|=1$, period $\frac{2\pi }{1 }=2\pi $, and phase shift $\frac{\frac{\pi }{2}}{1}=\frac{\pi }{2}$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.