If `cos (A-B)=3//5 and tan A tan B=2 `, then which one of the following is true ?

If cos(A-B)=3/5and tan A tanB=2, then

cos (AB) = (3) / (5) and tan A tan B = 2 then

If tan alpha=3 and tan beta=(1)/(2) , then which of the following is true ?

If tan A=(1)/(2) and tan B=(1)/(3) , then which of the following is true ?

If cos(A-B)=(3)/(5),tan A*tan B=2 which of the following is true

If a sin^(2)theta+b cos^(2)theta=m,b sin^(2)phi+a cos^(2)phi=n,a tan theta=b tan phi, then which of the following is true?

If tan^(-1)a+tan^(-1)b+tan^(-1)c=pi , then which of the following is true ?

if 3tan A tan B=1 then 2cos(A+B)