Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 10 - Radical Expressions and Equations - 10-6 Trigonometric Ratios - Practice and Problem-Solving Exercises - Page 638: 37


The cosine of that angle would be found. Then, both sides would be multiplied by the length of the hypotenuse and divided by the value of the cosine of the angle.

Work Step by Step

Cosine of an angle = adjacent sidelength/hypotenuse sidelength $cos (x) = adjacent/hypotenuse$ $cos (x)*hypotenuse = adjacent/hypotenuse*hypotenuse$ $cos (x)*hypotenuse/cos (x) = adjacent/cos (x)$ $hypotenuse = adjacent/cos (x)$
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