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: 12

Answer

$a$

Work Step by Step

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