SOLUTION: I need help solving the following equation. 6arccos x = 5PI I divided the problem by 6 and got 6 arccos x = 5PI over 6, which is 150 degrees, but am not sure of what to do from t

Algebra ->  Trigonometry-basics -> SOLUTION: I need help solving the following equation. 6arccos x = 5PI I divided the problem by 6 and got 6 arccos x = 5PI over 6, which is 150 degrees, but am not sure of what to do from t      Log On


   



Question 739547: I need help solving the following equation. 6arccos x = 5PI
I divided the problem by 6 and got 6 arccos x = 5PI over 6, which is 150 degrees, but am not sure of what to do from there. My instructor wants all exact real number values of x in radians with an interval of [0, 2PI]. He says that there may be more than one solution.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
I need help solving the following equation. 6arccos x = 5PI
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x is not an angle. 5pi/6 is the angle.
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6arccos x = 5PI
acos(x) = 5pi/6
x = oos(5pi/6)
x+=+-sqrt%283%29%2F2