In a triangle ABC if the angles A, B, C are in AP, then which one of the following is correct ?

In DeltaABC , if the angles A.B.C are in AP, which one of the following is correct ?

If tan A>tan B in the triangle ABC as shown.then which one of the following is correct?

In a triangle ABC, a = 2b and angle A = 3 angle B . Which one of the following is correct ?

In a triangle ABC, if a = 2b and A = 3B then which one of the following is correct?

In a triangle ABC, if a = 2b and A = 3B then which one of the following is correct ?

If in a triangle ABC, sin A, sin B, sin C are in A.P, then

In triangle ABC and triangle DFE , AB = FD , angle A = angle D . The which of the following is correct ?

In triangle ABC if a,b,c are sides opposite of angles A, B, C respectivgely, then which of the following is correct ?

Let ABC be a triangle. If cos2A + cos2B+ cos 2C = -1 , then which one of the following is correct?