Halp!

I need help on a calculus problem. Does anyone know the answer (or can point me in the right direction) on this: What is the limit as x approaches 0 for tangent squared over x

L'Hôpital's rule. lim(x->0) tan^2(x)/x = lim(x->0) 2sec^2(x) = 0? Check it with a graphing calculator, I could be wrong.