Question 871693: 2 cos^2 theta = sin theta + 2
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 2 cos^2 theta = sin theta + 2
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2cos^2(t) - sin(t) - 2 = 0
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Use the Quadratic formula to get::
sin(t) = [1 +- sqrt(1-4*-2)]/4
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sin(t) = [1 +- 3]/4
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sin(t) = 1 or sin(t) = -1/2
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t = 90 or t = 210 or t = 330 degrees
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Cheers,
Stan H.
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