Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 11 - Section 11.4 - Applications with Acute Triangles - Exercises - Page 527: 10b

Answer

39°

Work Step by Step

γ = 180°-α - β = 180° - 57° - 84° = 39°
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