Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 1 - Precalculus Review - 1.4 Trigonometric Functions - Preliminary Questions - Page 29: 5


$$y= \sin \theta.$$

Work Step by Step

The unit circle definition of $\sin \theta $ is that $$y=r\sin \theta=\sin \theta,$$ where the radius $r=1$.
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