The derivation of the moment of inertia for the ground state nucleus given by Migdal in the quasi-classical approximation has been extended to the excited state case, i.e. T≠0. We have calculated K02 , the parameter of the angular distribution of the fission fragments. The results arc compared with the experimental data. This shows that under the present approximation the "anomalously" small K02 of fissioning nuclei in the uranium region at low excitation energy (Eexc≤15 MeV) can be explained by introduction of the pairing effects in nuclei. Furthermore, the absence of the "anomalous" phenomena for fissioning nuclei near the lead region may be qualitatively interpreted by means of the dependence of pairing effects on angular momentum.