The β-γ coincidence measurement has been performed with a segmented planar Hyper-Pure Germanium (HPGe) detector and a single coaxial HPGe detector to determine the end point energies of nuclear β-decays.The experimental end point energies have been determined for some of the known β-decays in ¹⁰⁶Rh→¹⁰⁶Pd.The end point energies corresponding to three weak branches in ¹⁰⁶Rh→¹⁰⁶Pd decay have been measured for the first time.The γ ray and β particle responses for the planar HPGe detector were simulated using the Monte Carlo based code GEANT3.The experimentally obtained β spectra were successfully reproduced with the simulation.