TY - JOUR T1 - Goniometrický tvar kvadratických čísel A1 - Rebo, Július JA - Obzory matematiky, fyziky a informatiky Y1 - 2017 VL - 46 IS - 3 SP - 19 EP - 27 SN - 1335-4981 N2 - The paper deals with the implementation of trigonometric form of quadratic numbers for which the procedures of multiplication and division are derived. Generalization of the de Moivre theorem is given for the natural powers of quadratic numbers in trigonometric form. ER -