Answer
See below.
Work Step by Step
1) We are given that the triangle is a right-angled triangle and the two angles are $45^{\circ}$.
2) The hypotenuse side is equal to $\sqrt 2$ units.
3) The remaining two sides are both $1$ unit.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 4 - Section 4.3 - Right Triangle Trigonometry - Exercise Set - Page 562: 63
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