Limx-0 sinx/tanx+tanx.sinx

Answer 1

The first step in evaluating a limit would be to substitute the limiting value into the expression. If it evaluates to a valid number, that is the limit.
Example:
limit x->1 x²/x =1²/1 = 1

Since
sinx/tanx + tanx.sinx ≡ 1/cos(x)
so the limit is 1/cos(0)=1.