  Various applications of superconducting materials require accounting of
anisotropy of the current-carrying capacity relative to magnetic field
direction - Ic({\theta}). However, today there is no sufficiently comprehensive
model that takes into account the anisotropy, therefore the angular dependences
are usually not analysed, but only described using various mathematical
formulas. As a result, the fitting parameters have no physical meaning and it
is difficult to correlate the picture with the features of the microstructure.
In this paper, we propose a method for analysing the critical current angular
dependences based on the anisotropic pinning model. The applicability of this
model for conventional superconducting Nb-Ti tapes with one peak in the Ic
({\theta}) dependence is shown. The possibility of extending this model to
analyse the angular dependences of HTS materials is discussed.
