Answer
$\lim\limits_{x\to\frac{\pi}{2}^+}\dfrac{-2}{\cos{x}}=+\infty.$
Work Step by Step
$\lim\limits_{x\to\frac{\pi}{2}^+}\dfrac{-2}{\cos{x}}=\dfrac{-2}{\cos{\frac{\pi}{2}^+}}=\dfrac{-2}{0^-}=+\infty.$
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
Published by
Brooks Cole
ISBN 10:
1-28505-709-0
ISBN 13:
978-1-28505-709-5
Chapter 1 - Limits and Their Properties - 1.5 Exercises - Page 88: 44
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