Because 1/5555555 is extremly close to 1.8E7, and combining the fact that lim sin(x) as x> 0 is x (radians), so then sin(1/555555) radians is very close to 1.8E7. Then convert to degrees > pi/180. and voila, you get pi*10^9.

Posted by Kenny M
on 20130402 08:59:29 