" (3) Show that "tan2 theta=(2 pi n theta)/(1-tan^(2)theta)" sf "theta=30^(@)

If theta=30o, verify that: (i) tan2 theta=(2tan theta)/(1-tan^(2)theta)( ii) sin2 theta=(2tan theta)/(1+tan^(2)theta)

Show that tan (pi/4+theta/2)=sec theta +tan theta .

Show that tan{(2n+1)pi+theta}+tan{(2n+1)pi-theta}=0

Show that tan{(2n+1)pi+theta}+tan{(2n+1)pi-theta}=0

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

If tan2 theta*tan theta=1, then theta=

If tan theta + tan 2theta + tan theta tan2theta =1 then theta =

Show that (cos^(2)theta - sin^(2)theta)=(2tan theta)/((1- tan^(2)theta)) is not an identity .

Prove that (tan^(2)2theta-tan^(2)theta)/(1-tan^(2)2thetatan^(2)theta)=tan 3 theta tan theta .