Answer
$11.1$ in.
Work Step by Step
$\frac{\sin70^{\circ}}{12}=\frac{\sin60^{\circ}}{x}$
$\sin70^{\circ}x=12\sin60^{\circ}$
$x=\frac{12\sin60^{\circ}}{\sin70^{\circ}}$
$x\approx11.1$
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 11 - Section 11.4 - Applications with Acute Triangles - Exercises - Page 527: 17
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