Show that :
`tan ( A + B ) = tanA + tanB + tan( A + B ) tanA tanB`

tanA +tanB + tanC = tanA tanB tanC if

If A+B+C= pi/2 , show that : tanA tanB + tanB tanC + tanC tanA=1

If 2tanA = 3tanB = 1, then what is tan(A-B) equal to?

In a triangle ABC, tanA + tanB + tanC = 9. If tan^2 A+ tan^2 B + tan^2 C= k then the least value of k^(9/7) is

If A + B + C = 180^o then find tanA + tanB + tanC =

Statement-1: In an acute angled triangle minimum value of tan alpha + tanbeta + tan gamma is 3sqrt(3) . And Statement-2: If a,b,c are three positive real numbers then (a+b+c)/3 ge sqrt(abc) into in a triangleABC , tanA+ tanB + tanC= tanA. tanB.tanC

In DeltaABC , tanA+tanB+tanC=tanAtanBtanC

Prove that: (tanA + tanB)/(cotA+cotB)=tanAtanB

If (1 + tan A) (1 + tanB) = 2, then { A + B) is equal to

If A+B+C= pi , prove that tan A+tan B+tan C= tanA tan B tan C