SOLUTION: Find the value for sin (x/2) if the following conditions hold: cos(x)= -1/3and x is in quadrant two.

Algebra ->  Trigonometry-basics -> SOLUTION: Find the value for sin (x/2) if the following conditions hold: cos(x)= -1/3and x is in quadrant two.       Log On


   

Question 936293: Find the value for sin (x/2) if the following conditions hold: cos(x)= -1/3and x is in quadrant two.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the value for sin (x/2) if the following conditions hold: cos(x)= -1/3and x is in quadrant two.
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cos(x/2) = sqrt[(1+cos(x))/2] = sqrt[(2+(-1/3))/2] = sqrt[(5/6)]
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Cheers,
Stan H.
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