tan Add Mul 0.0183156388887342 x0 sec asech x0 
Mul Pow sec Add Mul 0.0183156388887342 x0 sec asech x0 2 Add 0.0183156388887342 Mul Mul tan asech x0 sec asech x0 Pow Mul Mul x0 x0 sqrt Add 1 Mul -1 Pow Mul x0 x0 -1 -1 