SOLUTION: Please help me solve this problem: find all solutions 3 cos(pi/5)x=2

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Question 1028764: Please help me solve this problem: find all solutions 3 cos(pi/5)x=2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
3 cos(pi/5)x=2
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cos[(pi/5)x] = 2/3
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(pi/5)x = arccos(2/3)
pi/5 x = 0.8411
x = 0.8411(5/pi) = 1.54 radians = 88.64 degrees
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Cheers,
Stan H.
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