Add atan Add 2.08616739573719 cos Mul Add x2 pi x0 sec Pow x0 Mul x1 x3 
Add Mul Mul Mul -1 sin Mul Add x2 pi x0 Add x2 pi Pow Add 1 Mul Add 2.08616739573719 cos Mul Add x2 pi x0 Add 2.08616739573719 cos Mul Add x2 pi x0 -1 Mul Mul tan Pow x0 Mul x1 x3 sec Pow x0 Mul x1 x3 Mul Pow x0 Add Mul x1 x3 -1 Mul x1 x3 