2015/08/28 by Ignacio Tejeda, Tejeda, Ignacio
Mathematics · #FOS: Mathematics #History and Overview (math.HO) #math.HO
paper · pdf · doi:10.48550/arxiv.1509.02488
in Spanish
arxiv created 2015/08/28 · arxiv updated 2015/09/09
I review some facts which the usual sen(x) and cos(x) definitions are based on. The purpose of this paper is to show that this facts can be proved if we assume some basic ideas of elementary geometry.