Add x0 Pow Mul tan x6 sec Pow cot x0 x5 pi 
Add 1 Mul Pow Mul tan x6 sec Pow cot x0 x5 Add pi -1 Mul pi Mul tan x6 Mul Mul tan Pow cot x0 x5 sec Pow cot x0 x5 Mul Pow cot x0 Add x5 -1 Mul x5 Mul -1 Pow csc x0 2 