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OpenStudy (anonymous):
solve the equation 2cos^2θ-3cosθ+1=0, 0≤θ<0 I believe it has to be in radians. If you could rather help me to the answer, that would be amazing!
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OpenStudy (anonymous):
You can make the u sub: u=cos(theta) Then you will get a quadratic equation, Do you know how to go on?
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