3coscot1 sin 33cscSolution3coscot1 sin 3 3csc LHS 3coscot

3cos()cot()/(1 sin ) 3=3csc()

Solution

3cos()cot()/(1 sin ) 3 =3csc()

LHS : 3cos()cot()/(1 sin ) 3

divide multiply by 1+sin

3coscot(1+sin)/( 1-sin^2) -3

= 3coscot(1 +sin)/cos^2 -3

= 3cot(1+sin)/cos -3

= 3cos(1+sin)/sincos -3

= (3+3sin)/sin -3

= 3csc +3 -3

= 3csc

= RHS