Prove that in `triangleABC` tan A + tan B + tan C `gt= 3 sqrt(3)` where A, B, C are acute angles.

Prove that tan 70^@ = tan 20^@ + 2 tan 50^@ .

Show that tanx tan 2x tan 3x = tan 3x-tan 2x- tan x

Show that tan 15^@ = 2 - sqrt3

Show that tan '3 x tan 2 x tan x=tan 3 x-tan 2 x-tan x'

In triangle ABC , tan A +tan B +tan C =6 and tan A tan B =2 , then the values of tan A , tan B , tan C are