Question

P.T
1 -cos 2A/sin2A=tanA
​

Answer 1

Answer:

L. H. S=2 sin^2 A/2 sinA cosA

=sinA/cosA=tan A

Answer 2

Answer:

cos2A = 1-2sin²a

sin2A = 2sinacosa

Putting both values ,

= 1-(1-2sin²a)/2sinacosa

= 2sin²a/2sinacosa

=Sina/cosa

= tana (Proved)

$\color{red}{Mark\: as\: Brainlist}$