Answer
$x = \frac{5\pi}{4}$
Work Step by Step
The least positive number for which $y = cot~x$ is undefined is $\pi$
Let $x - \frac{\pi}{4} = \pi$
Then: $~~x = \frac{5\pi}{4}$
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
978-0-13-421743-7
ISBN 13:
978-0-13421-743-7
Chapter 4 - Graphs of the Circular Functions - Section 4.3 Graphs of the Tangent and Cotangent Functions - 4.3 Exercises - Page 173: 58
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