Mathematics in Ancient and Medieval India c8.208

c8.208

The values of the sine table based on *Sūryasiddhānta's* rule can be obtained in a much simpler way from the values of Jyā 30⁰ = R/2, Jyā 45⁰ = √((R²)/2), Jyā 60⁰ = √(3/2)R and Jyā 90⁰ = R, together with the knowledge of values of two trigonometrical formulae namely,