Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.2 - Trigonometric Functions: The Unit Circle - Exercise Set - Page 549: 98


The statement does not make sense.

Work Step by Step

The statement talks about a point t on the unit circle: $\sin t=-\frac{\sqrt{10}}{2}$ The round-off value of $-\frac{\sqrt{10}}{2}$ is $-1.59$, which is out of the range of the sine function. Therefore, the point t is not on the unit circle. Hence, the statement is false.
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