Answer
0
Work Step by Step
The cosine of $\pi/2$ of the unit circle is on the y-axis. Thus, since cosine maps to the x coordinate, the answer is 0.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 14 Trigonometric Graphs, Identities, and Equations - Prerequisite Skills - Page 906: 5
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