Question

Prove that √1+ cos A/√1-cosA=cosecA+cot A​

Answer 1

Answer:

FIRSTLY WE WILL RATIONALISE ONE ROOT + COS A DIVIDED BY ROOT 1 MINUS COS A.

Then apply identity of (a +b)2= 10 cut the square with root

1 squareA -1=Cos2A

then 1 divided by sin is equal to cosec and Cos A divided by sin is equal to Cot A

THEN L.H.S.=R.H.S.

HENCE PROOVED