Answer
$45^{\circ}$
Work Step by Step
$sin 45^{\circ} = cos 45 ^{\circ}= \frac{1}{\sqrt 2}\approx0.707$
Coordinates on unit circle will be $(0.707, 0.707)$.
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 2 - Acute Angles and Right Triangles - Section 2.1 Trigonometric Functions of Acute Angles - 2.1 Exercises - Page 53: 73
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