Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 6 - Section 6.2 - More Angle Measures in the Circle - Exercises - Page 285: 5



Work Step by Step

$\frac{RT}{180-RT}$=$\frac{1}{4}$ 4RT=180-RT 5RT=180 RT=36$^{\circ}$ m$\angle$RST=.55RT m$\angle$RST=18$^{\circ}$
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