Let A,B,C be the three angles such that `A+B+C=tan A.tan B-2`, then find the value of `(cos A cos B)/(cos C)`

Let A,B,C be the three angles such that A+B+C=pi , tan A.tan B=2 , then find the value of (cos A cos B)/(cos C)

Let A , B , C be the three angles such that A+B+C=pi . If T a nAtanB=2, then find the value of (cos(A-B))/(cosC)

If tan A =a/b , then find the value of ("a sin A- b cos A")/("a sin A + b cos A") .

Let A,B,C be three angles such that A = pi/4 and tan B* tan C=p Find all possible values of p such that A, B, C are three angles of a triangle.

Let A,B.C be three angles such that A=(pi)/(4) and tan B tan C=P. Find all possible values of P such A,B,C are angles of a triangle

Let A,B,C, be three angles such that A=(pi)/(4) and tan B tan C=p* Find all possible values of p such that A,B,C are the angles of a triangle.

Let A,B.C be three angles such that A=(pi)/(4) and tan B tan C=P. Find all possible values of P such A,B,C are angles of a triangle

Let a, b, c be the sides of a triangle and let A, B, C be the respective angles. If b+c=3a, then find the value of the ratio cos((B-C)/2)/cos((B+C)/2)

If tan A = (sin B)/(1 - cos B) ,then find the value of tan 2A .