The question is:

lim t-->0 (sin^2 3x / x^2)

How do you break it up? The sin^2 is throwing me off. Do you do this?

3 (sinx . sinx / x . x). Then get the answer is 3?

I understand the sinx/x=1 rule. PLEASE guide me! I am good at calculating limits, but trig always makes me depressed