If `p=tan20^@` express `(tan160^@-tan110^@)/(1+tan160^@.tan110^@)` in terms of p.

If tan20^@=lamda , then (tan160^@-tan110^@)/(1+(tan160^@)(tan110^@))=

IF tan 20^@ = p , then (tan 160^@ - tan 110^@ )/( 1+ tan 160^@ tan 110^@ )=

If cot 20^@=p then (tan16 0^(@)-tan11 0^(@))/(1+tan16 0^(@)tan11 0^(@))=

If tan 20^@ =p , " then " (tan 160^@ - tan 110^(@))/(1+ tan 160^(@) tan 110^(@))=

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

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

If tan20=lambda ,prove that (tan160^(@)-tan110^(@))/(1+tan160^(@)*tan110^(@))=(1-lambda^(2))/(2 lambda) .