Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of tan 75 degree and tan 90 degree by taking suitable values of A and B.

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of

Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of