Answer
See below.
Work Step by Step
Plugging in the given value: $3\cot^4(7\pi/6)-\cot^2(7\pi/6)-24=3(\sqrt3)^4-(\sqrt3)^2-24=27-3-24=0$
Thus, this is indeed a solution.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.4 Solve Trigonometric Equations - 14.4 Exercises - Skill Practice - Page 935: 8
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