atan csc Mul sec Add x0 -2 x5 
Mul Mul Mul Mul -1 cot Mul sec Add x0 -2 x5 csc Mul sec Add x0 -2 x5 Mul x5 Mul tan Add x0 -2 sec Add x0 -2 Pow Add 1 Mul csc Mul sec Add x0 -2 x5 csc Mul sec Add x0 -2 x5 -1 