" Prove that "tan70^(@)=2tan50^(@)+tan20^(@)

Prove that: tan70^(@)=tan20^(@)+2tan50^(@)

tan20^(@)+2tan50^(@)=

Prove that tan70^(@)-tan20^(@)=2tan50^(@) .

tan10^(@)-tan50^(@)+tan70^(@)

Prove that, tan 70^(@) = 2tan 50^(@) + tan 20^(@)

Prove that: tan10^(@)tan50^(@)+tan50^(@)tan70^(@)+tan70^(@)tan170^(@)=3

Prove that tan 70^(@)-tan 20^(@)-2 tan 40^(@)=4 tan 10^(@)

tan10^(@)-tan50^(@)+tan70^(@)=?

Prove that tan70^(@)-tan20^(@)-2tan40^(@)=4tan10^(@) . (b) In a DeltaABC , if a=2sqrt3,b=2sqrt2andC=75^(@) find the other side and the angles.

Prove that tan40^(@) + 2tan10^(@) = tan50^(@)