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 637: 29



Work Step by Step

Use the Cosine rule for the right triangle: $\frac{adjacent}{hypotenuse}$ cos(32) = $\frac{56}{x}$ Solve for x by multiplying both sides by x and dividing by cos(32): x = $\frac{56}{cos(32)}$ Use a calculator: = 66.0
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