acos Mul Add cot x0 x0 0.996791737294049 
Mul -1 Mul Mul 0.996791737294049 Add Mul -1 Pow csc x0 2 1 Pow sqrt Add 1 Mul -1 Mul Mul Add cot x0 x0 0.996791737294049 Mul Add cot x0 x0 0.996791737294049 -1 