SciELO - Scientific Electronic Library Online

SciELO - Scientific Electronic Library Online

Referencias del artículo

PEREZ JUAREZ, Ángel. Rectas perpendiculares. Educ. mat [online]. 2010, vol.22, n.3, pp. 143-148. ISSN 1665-5826.

    Corral, M., Trigonometry, GNU free documentation, http://www.mecmath.net/trig. [ Links ]

    Stewart, J., L. Redlin y S. Watson, Precalculus. Mathematics for Calculus, 4a. ed., Brooks/Cole, Thomson Learning. [ Links ]

    Zill, D. G., Precálculo, con avances de cálculo, 4a. ed., McGraw-Hill. [ Links ]