sqrt asin Pow sec x0 1.76274717403909 
Mul Pow Mul 2 sqrt asin Pow sec x0 1.76274717403909 -1 Mul Mul Pow sec x0 0.762747174039086 Mul 1.76274717403909 Mul tan x0 sec x0 Pow sqrt Add 1 Mul -1 Mul Pow sec x0 1.76274717403909 Pow sec x0 1.76274717403909 -1 