Answer
m$\angle$RST=18$^{\circ}$
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$^{\circ}$
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
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
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