tan Add -2 Mul Mul Mul Add x3 x1 Add atan x0 x0 x2 x0 
Mul Pow sec Add -2 Mul Mul Mul Add x3 x1 Add atan x0 x0 x2 x0 2 Add Mul x0 Mul x2 Mul Add x3 x1 Add Pow Add 1 Mul x0 x0 -1 1 Mul Mul Add x3 x1 Add atan x0 x0 x2 