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Regla nemotécnica para calcular seno y coseno de ángulos
Regla nemotécnica para calcular seno y coseno de ángulos notables del primer cuadrante.
Regla nemotécnica para calcular seno y coseno de ángulos notables del primer cuadrante.Ligera modificación de un applet del Portal Académico del CCH en geogebra.