Jyotihshastra: Astral and Mathematical Literature c5.s2.2

c5.s2.2

⁶¹ See, for example, A. N. SINGH, “Hindu Trigonometry,” PBMS, NS 1 (1939), 77–92; and the following articles, among others, by R. C. GUPTA: “Early Indians on Second Order Sine Differences,” IJHS 7 (1972), 81–86; “Bhāskara I’s Approximation to Sine,” IJHS 2 (1967), 121–136; “Addition and Subtraction Theorems for the Sine and the Cosine in Medieval India,” IJHS 9 (1974), 164–177; “Sine of Eighteen Degrees in India up to the Eighteenth Century,” IJHS 11 (1976), 1–10; and “Sines of Submultiple Arcs as found in the Siddhānta-tattvaviveka,” RUMJ 5 (1974), 21–27.