Answer
$\cos t\csc t=\cot t$
Work Step by Step
$\cos t\csc t$
Substitute $\csc t$ with $\dfrac{1}{\sin t}$ and simplify:
$\cos t(\dfrac{1}{\sin t})=\dfrac{\cos t}{\sin t}=\cot t$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 7 - Section 7.1 - Trigonometric Identities - 7.1 Exercises - Page 542: 4
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