Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.5 Write Trigonometric Functions and Models - 14.5 Exercises - Quiz for Lessons 14.3-14.5 - Page 945: 3



Work Step by Step

Re-arrange the given equation as: $=\cot \theta \times \cot \theta -\csc^2 \theta$ $=\cot^2 \theta -\csc^2 \theta$ $=\cot^2 \theta -(\cot^2 \theta+1)$ $=\cot^2 \theta -\cot^2 \theta -1$ $=-1$
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