/3*pi \ tan(pi - x)*sin|---- + x| \ 2 / ------------------------- /3*pi \ cos(pi + x)*cot|---- + x| \ 2 /
sin((3*pi)/2 + x)*tan(pi - x)/(cos(pi + x)*cot((3*pi)/2 + x))
/2*x + 3*pi\ sin|----------|*tan(x) \ 2 / ---------------------- /2*x + 3*pi\ cos(x)*cot|----------| \ 2 /