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y2o2
 4 years ago
Prove that (cos pi/7)(cos 2pi/7)(cos 4pi/7)=(1/8)
y2o2
 4 years ago
Prove that (cos pi/7)(cos 2pi/7)(cos 4pi/7)=(1/8)

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I can prove it via a rectangularshaped machine called calculator.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I do deserve a medal dude ^_^

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0hahahahaha thanx there
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