Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 10 - Radical Expressions and Equations - 10-6 Trigonometric Ratios - Practice and Problem-Solving Exercises: 9

Answer

5/13

Work Step by Step

Remember, for a right triangle, cos F is equal to side adjacent to angle f divided by the hypotenuse of the triangle. When we do this for the triangle in the problem, we find that cos f equals 5/13.
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