Answer
$cot(2\theta)=\frac{A-C}{B}$
Work Step by Step
The formula for the rotation angle which is required for the transformation is $cot(2\theta)=\frac{A-C}{B}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 9 - Analytic Geometry - Section 9.5 Rotation of Axes; General Form of a Conic - 9.5 Assess Your Understanding - Page 698: 5
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