Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 5 - Trigonometric Functions - 5.3 Trigonometric Functions Values and Angle Measures - 5.3 Exercises - Page 531: 14

Answer

$\sin A=\frac{k}{z}$ $\cos A=\frac{y}{z}$ $\tan A=\frac{k}{y}$

Work Step by Step

$\sin A=\frac{\text{side opposite}}{\text{hypotenuse}}=\frac{k}{z}$ $\cos A=\frac{\text{side adjacent}}{\text{hypotenuse}}=\frac{y}{z}$ $\tan A=\frac{\text{side opposite}}{\text{side adjacent}}=\frac{k}{y}$
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