got it:
2/srt2 * arctan(1) - arctan(0)= 0.5553603673
MathCad Solution :
1/8*pi*2^0.5 = 0.553603673
So now that these match I need to express the answer in terms of pi - I am assuming that this means I have to turn the numerical value in terms of pi (e.g. pi/2)???
However this seems like an ugly solution so to speak as it would give:
5.66pi
doesnt sound right