Bulletin of Mathematical Sciences, cilt.5, sa.1, ss.137-146, 2015 (SCI-Expanded)
In this paper, a method for determination of developable spherical orthotomic ruled surfaces is given by using dual vector calculus. We show that dual vectorial expression of a developable spherical orthotomic ruled surface can be obtained from coordinates and the first derivatives of the base curve. The paper concludes with an example related to this method.