Answer
$\cot\theta$ = $\frac{1}{a}$
Work Step by Step
Given $\tan\theta$ = $a$ , ($ a\ne 0$)
We know that -
$\cot\theta$ = $\frac{1}{\tan\theta}$
Therefore
$\cot\theta$ = $\frac{1}{a}$ Given ($ a\ne 0$)
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
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: 17
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