Ответ
sin(2)/(2*sin(2)^2+2*cos(2)^2+4*cos(2)+2)
1 / | | 3 | x -tan(1/2) | -------- dx = ---------------- | 2/ 4\ 2 | cos \x / -2 + 2*tan (1/2) | / 0
$${{\sin 2}\over{2\,\sin ^22+2\,\cos ^22+4\,\cos 2+2}}$$