Trigonometry (10th Edition)

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: 72

Answer

The student's answer was not the EXACT answer since it is rational.

Work Step by Step

$\sin$ 45$^{\circ}$ = $\frac{1}{\sqrt2}$ $\frac{1}{\sqrt2}$ is irrational. Meaning that it does not have a finite set of digits. 0.7071067812 is rational. This means that the student's answer was not the EXACT answer since it is rational.
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