Question 1028764
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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