Answer
$\lim\limits_{x \to \frac{\pi}{2}}\tan x $ does not exist
Work Step by Step
Since $\lim\limits_{x \to \frac{\pi}{2}}\tan x $ does not exist, we can not apply the product law.
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 2 - Limits - 2.3 Basic Limit Laws - Exercises - Page 59: 32
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