I need to evaluate the lim x->0 tan^2(x)/x

I can use any method to do this. I know the limit is zero but I wasn't sure what method I could use to evaluate this.

It could be re-written as:

(sinx/cosx)(sinx/cosx)/x

The sin of 0 is 0 and therefore makes the whole function zero, would this be sufficient enough to evaluate it?