Konuralp Journal of Mathematics, cilt.8, sa.2, ss.429-437, 2020 (Scopus)
In this paper, we give trigonometric functions by using reference angle in the plane R2 π3associated with the induced metric dπ3 that is a member of the family of dπn−distances. Also we investigate the change of the length a line segment under the rotations in the plane R2 π3.