" If "A=30^(@)," verify that "sin2A=(2tan A)/(1+tan^(2)A)

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 that :- cos2A= (1-tan^2A)/(1+tan^2A) .

If A= 30^@ verify that :- sinA=tanA/ sqrt(1+tan^2A) .

Taking A=30^(@) , verify the following: tan2A=(2tanA)/(1-tan^(2)A)

Verify that sin60^(@)=(2tan 30^(@))/(1+tan^(2)30^(@))

If x=30o, verify that : tan2x=(2tan x)/(1-tan^(2)x) (ii) sin x=sqrt((1-cos2x)/(2))

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

If theta = 30^@ , verify that tan 2 theta= (2 tan theta)/(1- tan^2 theta) .

If theta=30^@ , verify that: (i) tan2theta=(2tantheta)/(1-tan^2theta) (ii) sin2theta=(2tantheta)/(1+tan^2theta)

If A=60^(@) , verify that : (i) sin^(2)A+cos^(2)A=1" (ii) "sec^(2)A-tan^(2)A=1