#### 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 $(0.707, 0.707)$.

Published by
Pearson

ISBN 10:
0321671775

ISBN 13:
978-0-32167-177-6

$45^{\circ}$

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