`tanA=(1-cosB)/(sinB)=>tan2A-tanB=`

"If" tanA =(1-cosB)/(sinB), "then "tan2A =tanB

If tan A=(1-cosB)/(sinB) , then tan 2A is equal to

If tanA=(1-cosB)/(sinB) , express tan 2A in terms of tan B

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

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

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

If tanA=(1)/(2) and tanB=(1)/(3) , then tan(2A+B) is equal to

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 .

If A+B=225^(@) , then (tanA)/(1-tanA).(tanB)/(1-tanB)=?