Prove that-
`sin(A-B)/sin(A+B)= (tanA-tanB)/(tanA+tanB)`

If A=60^(@) and B=30^(@) , verify that : (i)sin(A-B)=sinAcosB-cosAsinB (ii) cos(A-B)=cosAcosB+sinAsinB (iii) tan(A-B)=(tanA-tanB)/(1+tanAtanB)

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

If A and B are acute angles such that tanA=(1)/(3) , tanB=(1)/(2) and tan(A+B)=(tanA+tanB)/(1-tanAtanB) , Then find the value of A+B .

In any triangle ABC , (tanA/2-tanB/2)/(tanA/2+tanB/2) is equal to

If A and B are supplementary angles then find the value of (tanA+tanB)/(1-tanAtanB)

Prove that: (cos(A-B)+sinA-cos(A+B))/(sin(A+B)+cosA-sin(A-B))=tanA

Prove that: (sin(A+B)-2sinA+sin(A-B))/(cos(A+B)-2cosA+cos(A-B))= tanA

If A+B+C=pi , prove that : (cotA+cotB)/(tanA+tanB) + (cotB+cotC)/(tanB+tanC) + (cotC+cotA)/(tanC+tanA) =1

(cot A+tanB)/(cotB+tanA) is :