Kragujevac J. Math. 28 - 9
Kragujevac J. Math. 28 (2005) 139-144.
HYPERBOLIC ANGLE FUNCTION IN THE LORENTZIAN PLANE
Emilija Nesovic
Faculty of Science, P. O. Box 60, 34000 Kragujevac, Serbia
and Montenegro (e-mails: emines@ptt.yu, emilija@kg.ac.yu)
Abstract.
In this paper, using definitions of oriented hyperbolic angles
between non-null vectors, we prove some theorems related to the
angles in a triangle in the Lorentzian plane.