Noting that the magnetic field lines of a bar magnet resemble the electric field lines of a pair of equal and opposite charges, do you expect the magnetic field to rapidly decrease in strength with distance from the magnet? is this consistent with your experience with magnets?

Generally dipoles will have fields that are proportional to the inverse cube of the distance from the dipole.

This means that if you were to measure the B field of a bar magnetic at some point then walk away such that you doubled your distance from the magnet, your new B field strength would be an eighth of the original B field strength.

answer; ///(74) degrees is your answer..