" (iii) "tan20^(@)tan40^(@)tan80^(@)=sqrt(3)

tan20^(@)-tan80^(@)+sqrt(3)=

tan20^(@)tan40^(@)tan60^(@)tan80^(@)

Prove the following: (i) "tan" 20^(@) tan 40^(@) tan 60^(@) tan 80^(@)=3 (ii) "tan" 20^(@) tan 40^(@) tan 80^(@)="tan" 60^(@) .

Prove that tan20^(@) tan40^(@) tan80^(@) = sqrt3

Show that tan20^@tan40^@tan80^@=sqrt3

tan20^(@)tan40^(@)tan60^(@)tan80^(@)=?

tan20^(@)tan30^(@)tan40^(@)tan80^(@)=1

tan20^@tan40^@tan60^@tan80^@=

Prove that tan20^(@)tan40^(@)tan80^(@)=tan60^(@) .

Prove that: tan20^(@)tan40^(@)tan80^(@)=tan60^(@)