/cos(2*x)\ lim |--------| pi \ tan(x) / x->--+ 4
Limit(cos(2*x)/tan(x), x, pi/4)
/cos(2*x)\ lim |--------| pi \ tan(x) / x->--+ 4
0
= 6.12323399565632e-17
/cos(2*x)\ lim |--------| pi \ tan(x) / x->--- 4
0
= 6.12323399573682e-17
= 6.12323399573682e-17