Solve trig equations by factoring If nonsolution exists on the unit circle, write no solution A. 2cos^2x-cosx-1=0 B. 1-2tan^2x=-tanx C. Csc^2x-4cscx-5=0

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter3: Multi-step Equations And Inequalities
Section: Chapter Questions
Problem 11PTTS
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Solve trig equations by factoring If nonsolution exists on the unit circle, write no solution A. 2cos^2x-cosx-1=0 B. 1-2tan^2x=-tanx C. Csc^2x-4cscx-5=0
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Step 1

Given trigonometric equations are 

a) 2cos2x-cosx-1=0

b) 1-2tan2x=-tanx

c) csc2x-4cscx-5=0

solve these by factoring

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