Answer
$y=cos(x-\frac{\pi}{3})$
Work Step by Step
The graph appears to be the result of $y=cos(x)$ shifted $\frac{\pi}{3}$ units to the right, thus the function is $y=cos(x-\frac{\pi}{3})$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 6 - The Circular Functions and Their Graphs - 6.4 Translations of the Graphs of the Sine and Cosine Functions - 6.4 Exercises - Page 613: 27
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