Find the value of $\frac {|B-A| }{|1-\overline AB|}$ where $|B| = 1$. 
If $A$ and $B$ are two different complex numbers and $|B| = 1$, find the value of
  $$\frac {|B-A| }{|1-\overline AB|}$$
  where, as usual, $\overline A$ denotes the conjugate of $A$.

If possible please don't tell me the entire answer just tell me from where to begin.

Note that $|\overline{B}|=|B|=1$ and
$$|1-\overline{A}B|=|1-\overline{A}B|\cdot|\overline{B}|=|(1-\overline{A}B)\cdot\overline{B}|=|\overline{B}-\overline{A}|B|^2|=|\overline{B}-\overline{A}|.$$
Can you take it from here?
