Mathematics in Ancient and Medieval India c8.167

c8.167

The construction of the *Jyā* table (or Indian sine table i.e. the values of R Sin θ) or the calculation of the values of the *Jyās* of different arcs in a quadrant was given a great importance by Indian astronomers as it was used to calculate the planetary positions as accurately as possible. For this, the circumference of each quarter of a circle was divided into 24 equal parts, each part covering 225 units (= 3°45') of the circumference. The twenty-four *Jyā* values as given by Varāhamihira,¹ Āryabhaṭa², Govindasvāmī³ and others for every increase of 3°45' are arranged in Table I.