||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{
from numpy import cos, pi
z=cos(1/2*pi-i*pi).n(digits=15) # specify the accuracy
print "u = ",real(z) # real part
print "v = ",imag(z) # imaginary part
}}}

/* code_ends */

 * '''Solution by''': 
   *  <sunny mehrotra>,  <student> ,<IIT Roorkee>
   *  <Sharat  S.I>,<student>,<IIT Roorkee>