Question

I'm having trouble finding the lim x->0 tan2x/x can you help?

Answer 1

Since pluggin 0 gives 0/0 we have to look like trying to rewrite tan(2x)/x

First I would rewrite in terms of sin and cos
Then I would have to recall a very important trig limit that all cal students should know when doing trig limits
is
limx->0 (sin(x)/x)=1