SOLUTION: how do you calculate cos pie over 5 and cot 3pie over 7

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Question 247431: how do you calculate cos pie over 5
and cot 3pie over 7
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
how do you calculate cos pie over 5
and cot 3pie over 7
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cos(pi/5) = cos(180/5) = cos(36 degrees) = 0.8090...
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cot(3pi/7) = cot(540/7) = cot(77.14 degrees) = 0.2282
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Cheers,
Stan H.