`tan 20^@ - tan 80^@ + sqrt3 =`

the value of tan 40^@ + tan 20^@ + sqrt(3) tan 20^@ tan 40^@ is equal to

Show that tan70^@ + tan10^@ - tan50^@ = sqrt3

Assertion (A): tan40^(@) + tan 80^(@) - sqrt(3)tan 40^(@) tan80^(@)=-sqrt(3) Reason ( R): tan( A + B) =tan A + tan B + tan(A + B) tan A tan B

tan 20^(@) + tan40^(@) + sqrt(3).tan 20^(@).tan 40^(@)=

tan 20^(@) + tan40^(@) + sqrt(3).tan 20^(@).tan 40^(@)= ................... A) (1)/(sqrt3) B) sqrt3 C) -(1)/(sqrt3) D) -sqrt3

Find tan 20^(@) + tan40^(@) + sqrt(3)tan20^(@)tan40^(@) .

Prove that, tan 70^(@) - tan 50^(@) + tan 10^(@) = sqrt3

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