Question in a trigonometric equation.

I tried it a lot but am not able to get this.Pls help in how should I think when solving this type of question and which side is better to try to simplify first (LHS or RHS).Please share the solution in that way.

$\frac{1-\mathrm{sin}A}{1+\mathrm{sin}A}=1+2\mathrm{tan}A(\mathrm{tan}A-\mathrm{sec}A)$

One of the ways I tried but am not understand that how to simplify it in such a way that you get the RHS?

I tried it a lot but am not able to get this.Pls help in how should I think when solving this type of question and which side is better to try to simplify first (LHS or RHS).Please share the solution in that way.

$\frac{1-\mathrm{sin}A}{1+\mathrm{sin}A}=1+2\mathrm{tan}A(\mathrm{tan}A-\mathrm{sec}A)$

One of the ways I tried but am not understand that how to simplify it in such a way that you get the RHS?