acos asin Add 0.968802655850841 x0 
Mul -1 Mul Pow sqrt Add 1 Mul -1 Mul Add 0.968802655850841 x0 Add 0.968802655850841 x0 -1 Pow sqrt Add 1 Mul -1 Mul asin Add 0.968802655850841 x0 asin Add 0.968802655850841 x0 -1 