Answer
$y=12$
Work Step by Step
1. First you need to set up following ratio according to similar triangles.
$\frac{y}{40}=\frac{60}{200}$
2. Cross multiply and then find the y:
$200y=2400$
$y=12$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 1 - Trigonometric Functions - Section 1.2 Angle Relationships and Similar Triangles - 1.2 Exercises - Page 19: 64
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