If `tan theta + tan (60^@+ theta) + tan (120^@ + theta)=3` then `theta =`

tan theta+tan(60^(@)+theta)+tan(120^(@)+theta)=3tan3 theta

Iftan theta+tan(60^(@)+theta)+tan(120^(@)+theta)=3 then theta=

Prove that: tan theta tan(60^(@)-theta)tan(60^(@)+theta)=tan3 theta

If tan theta+tan(60^(@)+theta)+tan(120^(@)+theta)=3, Prove that: (3tantheta-tan^(3)theta)/(1-3tan^(2)theta)=1

If: tan theta + tan 2theta = tan 3theta , then: theta =