Question

ltx->0(cosecx-cotx)

Answer 1

could u plz typ dt in the eqn editor .!

Answer 2

I am assuming that you are trying to find the following:
\[\lim_{x \rightarrow 0}(cscx-cotx)\]
If so, my first step would be to rewrite the trig functions in terms of sin and cos and see where that gets you. For example:
\[\lim_{x \rightarrow 0}(cscx-cotx)=\lim_{x \rightarrow 0}(\frac{ 1 }{ sinx }-\frac{ cosx }{ sinx })=\lim_{x \rightarrow 0}(\frac{ 1-cosx }{ sinx })\]
You now have a 0/0 limit so try some of the special rules for finding the that type of limit.