sqrt(3)(tan140^(@)-tan110^(@))=1+tan140^(@)*tan110^(@)

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

If tan 40^(@)= lambda , then (tan 140^(@)-tan 130^(@))/(1+ tan 140^(@) tan 130^(@))=

If tan20^(@) = lambda then show that (tan 160^(@) -tan 110^(@))/(1+tan160^(@).tan110^(@)) = (1-lambda^2)/(2lambda) .

sqrt(3)(tan11^(@)+tan19^(@))+tan11^(@)tan19^(@)=

Tha value of sqrt(3)tan10^(@)+sqrt(3)tan20^(@)+tan10^(@)tan20^(@)

If tan 40^(@) = lambda , then (tan 140^(@) - tan 130^(@))/(1 + tan 140^(@) tan 130^(@)) =

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

If : p = cot 20^(@),"then": (tan 160^(@) - tan 110^(@))/(1 +tan 160^(@) * tan 110^(@))= A) (p^(2)-1)/(2p) B) (p^(2)+1)/(2p) C) (1-p^(2))/(2p) D) (2p)/(1 + p^(2))