sec Add Mul Add sec x0 -0.881373587019543 x0 acot x0 
Mul Mul tan Add Mul Add sec x0 -0.881373587019543 x0 acot x0 sec Add Mul Add sec x0 -0.881373587019543 x0 acot x0 Add Add Mul x0 Mul tan x0 sec x0 Add sec x0 -0.881373587019543 Mul -1 Pow Add 1 Mul x0 x0 -1 