Answer
$\sin A =\cos C$.
Work Step by Step
The diagram is shown in the image file.
By using trigonometric ratios:
$\sin A = \frac{BC}{AC}$
and $\cos C = \frac{BC}{AC}$
Equate the left hand side of both equations:
$\sin A =\cos C$.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 10 - Radical Expressions and Equations - Chapter Test - Page 657: 28
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