Aryabhatta: The Great Mathematician Aryabhatta wrote the Aryabhatiya, a 121-verse manuscript (476-529 A.D.). He invented methods for arithmetic, geometry, algebra, and trigonometry in addition to astronomy. Also calculated the value of the 'pi' to be 3.1416 and talked about mathematical concepts like numerical squares and cube roots. Through sine functions, Aryabhata is credited with developing trigonometry. Background Aryabhatiya was particularly well-known in South India, w