Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 6 - Section 6.1 - Circles and Related Segments and Angles - Exercises - Page 285: 3

Answer

$47.6^\circ$

Work Step by Step

$\overset{\frown}{DE}=\angle O$ by definition, therefore $\angle O=47.6^\circ$.
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