• Descobrindo as razões trigonométricas no triângulo retângulo 

      Oliveira, Henrique (Universidade Federal de São Carlos, UFSCar, Programa de Mestrado Profissional em Matemática em Rede Nacional - PROFMAT, , 23/03/2013)
      One of the important consequences of trigonometry is the ratio that exists between sides of similar triangles. Such reason appears frequently in many everyday problems and can be quite explored in the classroom. The aim ...