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: 71


A = 60$^{\circ}$

Work Step by Step

$\sin$A = 0.8660254083 A = $\sin$$^{-1}$(0.8660254083) A = 60.00 Therefore A = 60$^{\circ}$
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