lom50^(@)-tan40^(@)=2tan10^(@)

tan50^(@)-2tan10^(@)=

Prove that tan 50^(@) -tan40^(@)-2tan10^(@) .

If tan50^(@)-tan40^(@)=k tan10^(@) then the value of k is

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

tan20^(@)tan40^(@)tan80^(@)

Prove the following identities: tan50^(@) = tan40^(@) + 2tan10^(@)

Prove that: (i) tan 50^(@)="tan"40^(@)+2 tan 10^(@) (ii) 2 tan 70^(@)="tan"80^(@)-"tan"10^(@)

If 2a=2tan10^(@)+tan50^(@), 2b=tan20^(@)+tan50^(@) 2c=2tan10^(@)+tan70^(@), 2d=tan20^(@)+tan70^(@) Then which of the following is/are correct ?

If 2a=2tan10^(@)+tan50^(@), 2b=tan20^(@)+tan50^(@) 2c=2tan10^(@)+tan70^(@), 2d=tan20^(@)+tan70^(@) Then which of the following is/are correct ?

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