Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 12 - Section 12.5 - Circles - Exercise - Page 410: 15


$central$ $angle$ $=90°$

Work Step by Step

One-fourth of a circle is 90° (since the whole circle measures 360°). We know that the central angle measures the same value as the intercepted arc. So, we have: $central$ $angle$ $=90°$
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