(2tan A)/(1+tan^(2)A)=2sin2A

Prove that (2 tan A) /(1+ tan ^(2) A) = sin 2 A.

If 3cot A=4 , check whether (1-tan^2A)/(1+tan^2A)=cos^2A-sin^2A or not.

If 3cot A=4 , check whether (1-tan^2A)/(1+tan^2A)=cos^2A-sin^2A or not.

If 3 cotA=4,check whether (1-tan^2A)/(1+tan^2A)=Cos^2A-Sin^2A or not.

If A=30^(@) , verify that (i) sin2A=(2tanA)/(1+tan^(2)A) (ii) cos2A=(1-tan^(2)A)/(1+tan^(2)A) (iii) tan2A=(2tanA)/(1-tan^(2)A)

If /_A=30^(@), verify each of the following (i)sin2A=(tan A)/(1+tan^(2)A)(ii)cos A=(1-tan^(2)A)/(1+tan^(2)A)

If A=30^(@), prove that sin2A=2sin A cos A=(2tan A)/(1+tan^(2)A)

Show that sin 2 x=2 sin x cosx=(2 tan x)/(1+tan ^(2) x)

If 3 cot A = 4 , check whether (1-tan^(2)A)/(1+tan^(2)A)=cos^(2)A-sin^(2)A is true or not.