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

/* code_begins */

{{{
n,theta=var('n,theta')
A = Matrix([[cos(n*theta),sin(n*theta)],[-sin(n*theta),cos(n*theta)]])
print A
print
print
print 'Determinant =',A.determinant()
}}}

/* code_ends */

 * '''Solution by''': 
   ganesh, developer, space
   bhanukiran, student, technical university of Delft