Mathematician:Hipparchus of Nicaea

Greek astronomer, geographer, and mathematician of Turkish origin.

Derived the first known set of trigonometrical tables.

Discovered the precession of the equinoxes.

Nationality
Greek, of Turkish origin.

History

 * Born: c. 190 BCE, Nicaea, Bithynia (now Iznik, Turkey)
 * Died: c. 120 BCE, Rhodes

Discoveries

 * Precession of Equinoxes

Books and Papers

 * Τῶν Ἀράτου καὶ Εὐδόξου φαινομένων ἐξήγησις ("Commentary on the Phaenomena of Eudoxus and Aratus")
 * c 150 BCE: trigonometrical tables.

Also see

 * : Chapter $5$: Eternal Triangles