Answer
$14$
Work Step by Step
$\sin43^{\circ}=\frac{a}{20}$
$20\times\sin43^{\circ}=a$
$a\approx14$
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 11 - Test - Page 526: 7
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