tan40^(@)+2tan10^(@)=

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

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

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

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

Find the exact value of the expression (tan70^(@)-tan20^(@)-2tan40^(@))/(tan10^(@))

Prove that tan70^(@)-tan20^(@)-2tan40^(@)=4tan10^(@) . (b) In a DeltaABC , if a=2sqrt3,b=2sqrt2andC=75^(@) find the other side and the angles.

tan40^(@)+tan80^(@)-sqrt(3)tan40^(@)tan80^(@)=

Prove that: tan20^(@)tan30^(@)tan40^(@)tan80^(@)=1

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

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