Prove that cosA/1-sinA + sinA/1-cosA + 1 . . .

Question : Prove that cosA/1-sinA + sinA/1-cosA + 1 = sinAcosA/(1-sinA)(1-cosA)

Doubt by Jaskirat

Solution : 

Now Using Identity 
Sin²θ+cos²θ=1

= RHS

LHS = RHS

Hence Proved.