tan theta cos^2 theta = (2tan theta cos^2 theta - tan theta)/(1 - tan^2 theta

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 81E
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tan theta cos^2 theta = (2tan theta cos^2 theta - tan theta)/(1 - tan^2 theta 

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