Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 1 - Section 1.4 - Introduction to Identities - 1.4 Problem Set - Page 39: 7

Answer

-$\frac{3}{2}$

Work Step by Step

Let's assume that reciprocal of -$\frac{2}{3}$ is '$ x$'. By definition, product of a number and its reciprocal is always 1. Therefore- $ -(\frac{2}{3})\times x $ = 1 $x$ = $\frac{1}{-(\frac{2}{3})}$ or $ x$ = -$\frac{3}{2}$ i.e. reciprocal of -$\frac{2}{3}$ is -$\frac{3}{2}$
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