Y mul div c c mul x3 mul pow mul pow add c x1 c mul add mul c x1 add mul x5 pow cos x5 c mul pow cos x5 c cos x1 tan x3 div c c mul pow add mul c x5 add mul c cos x1 mul x1 cos x5 c mul pow cos x5 c add mul add x5 cos x1 sin x5 cos x5