Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 7 - Trigonometry and Periodic Functions - Strengthen Your Understanding - Page 319: 10

Answer

True

Work Step by Step

We know that the value of x for the unit circle is $x=cos\theta$. Thus, if the radius is r, then $x=rcos\theta$.
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