Thread: Trig equations?
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Old November 20th, 2008, 06:41 PM
eh501 eh501 is offline
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Default Trig equations?
I have a quiz tomorrow but i don't really get it:

1. Given 4cos x-2=cos x, solve for x, to the nearest degree, in the interval 0 < x < 360

i got 3cosx-2=0 but i don't know what to do after that..

and

2. Solve 2cos^2θ-cosθ=1
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