SOLUTION: The question is find the exact value of y in radian: y=cos^-1(radical 3 )/ 2 I put it in my calculator and got 30 degrees but im not sure what to do next. Do i find what quadrant

Question 853094: The question is find the exact value of y in radian: y=cos^-1(radical 3 )/ 2
I put it in my calculator and got 30 degrees but im not sure what to do next. Do i find what quadrant cos is postive then find the other answers?
thank you so much
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find the exact value of y in radian: y=cos^-1(radical 3 )/ 2
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y = arccos[sqrt(3)/2] = 30 degrees = 30(pi/180) = (1/6)pi radians
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Cheers,
Stan H.
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