Gw mau tau Ibrahim ibn Sinan dari Matematik pada zaman pertengahan Islam. Jelasin dalam bahasa melayu

Although Islamic mathematicians are most famed for their work on algebra, number theory and numeral systems, they also made considerable contributions to geometry, trigonometry and mathematical astronomy. Ibrahim ibn Sinan ibn Thabit ibn Qurra (b. 908), son of Sinan ibn Thabit and grandson of Thabit ibn Qurra, introduced a method of integration more general than that of Archimedes, and was a leading figure in a revival and continuation of Greek higher geometry in the Islamic world. He studied optics and investigated the optical properties of mirrors made from conic sections.

Ibrahim ibn Sinan, like his grandfather, also studied curves required in the construction of sundials, for the purposes of astronomy, time-keeping and geography, which provided motivations for geometrical and trigonometrical research.