asec sec Add 4 asin x0 
Mul Mul Mul tan Add 4 asin x0 sec Add 4 asin x0 Pow sqrt Add 1 Mul -1 Mul x0 x0 -1 Pow Mul Mul sqrt Add 1 Mul -1 Pow Mul sec Add 4 asin x0 sec Add 4 asin x0 -1 sec Add 4 asin x0 sec Add 4 asin x0 -1 