The history of trigonometry in ancient Greek astronomer associated with the name Ptolemy - geocentric system of the world the author that prevailed before Copernicus.
Umlando yentuthuko trigonometry eGrisi lasendulo lihlotshaniswa igama sezinkanyezi uPtolemy - nombhali uhlelo geocentric zomhlaba ezazikhona ngaphambi uCopernicus.