Originally Posted by Zelda Ninja

Cos (pi/5) = (1 + square root of 5)/4

CosXpie and CosX5= (I do not know) and (I do not know).
(I do not know)/(I do not know)=.25+2.23606798/4
(I do not know)/(I do not know)=.25+.559016995

I might of done it wrong, I don't know. Thats as far as I can go.