acos Mul x7 Pow Add x0 -4 0.0134752822213046 
Mul -1 Mul Mul x7 Mul Pow Add x0 -4 -0.986524717778695 0.0134752822213046 Pow sqrt Add 1 Mul -1 Mul Mul x7 Pow Add x0 -4 0.0134752822213046 Mul x7 Pow Add x0 -4 0.0134752822213046 -1 