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OpenStudy (anonymous):
3+3sin(theta)=2cos^2theta
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OpenStudy (anonymous):
Are you solving for theta?
OpenStudy (anonymous):
Use the inequality cos^2theta + sin^2theta = 1 to substitute and create an equation with only sines/cosines.
OpenStudy (anonymous):
In this case, it would be easiest to replace cos^2 theta with 1 - sin^2theta
OpenStudy (anonymous):
Then you can solve it with the quadratic formula
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