Quote:
Originally Posted by Eldin
Any math whizzes out there? Could you help me prove that:
Cos (pi/5) = (1 + square root of 5)/4
Note that the second expression is the quantity of one plus the square root of five divided by four (hence the parenthesis).
Much appreciated.
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You found someone!
Okay, gimme a minute...
?
I'm writing it out, and it looks wierd.
Are you allowed to graph or anything like that?