Elementary Geometry for College Students (7th Edition) Clone

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 11 - Section 11.3 - The Tangent Ratio and Other Ratios - Exercises - Page 520: 33a

Answer

The identity tan α = $\frac{sin α}{cos α}$ is valid

Work Step by Step

tan α = $\frac{a}{b}$ $\frac{sin α}{cos α}$= $\frac{\frac{a}{c}}{\frac{b}{c}}$= $\frac{a}{b}$
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