SOLUTION: find all real numbers that satisfy the equation 2 cos (3piX)= 1

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Question 766929: find all real numbers that satisfy the equation
2 cos (3piX)= 1
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find all real numbers that satisfy the equation
2 cos (3piX)= 1
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cos(3piX) = 1/2
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3piX = pi/3 or 60 degrees
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X = pi/9 or 20 degrees
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Cheers,
Stan H.
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