Trigonometry (10th Edition)

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

Chapter 4 - Graphs of the Circular Functions - Section 4.1 Graphs of the Sine and Cosine Functions - 4.1 Exercises - Page 146: 54b

Answer

12 months

Work Step by Step

A periodic function is a function that repeats its values in regular intervals. According to the graph, the function repeats itself after 12 months. Therefore, the period of the graph is 12 months.
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