Answer
$\sec\theta$
Work Step by Step
Given expression is-
$\csc\theta \tan\theta$
= $\csc\theta \times\tan\theta$
= $\frac{1}{\sin\theta} \times\frac{\sin\theta}{\cos\theta}$
= $\frac{1}{\cos\theta}$ = $\sec\theta$
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 1.5 - More on Identities - 1.5 Problem Set - Page 45: 15
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