[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Mathematics in Ancient and Medieval India](https://indike.org/pramana/ins.science.bag-1979) › c8.229 # Mathematics in Ancient and Medieval India c8.229 Mathematics in Ancient and Medieval India c8.229 - **Language:** English ### [c8.229](https://indike.org/pramana/ins.science.bag-1979.c8.229) Brahmagupta (628 A. D.) in his \*Khaṇḍakhādyaka\* (concluding chapter, v. 32) first used the second difference of sines in the method of interpolation.³ This is undoubtedly an improved step in the line. Brahmagupta's table of sines which runs at an interval of 15º of the arc is as follows : - [Previous: c8.228](https://indike.org/pramana/ins.science.bag-1979.c8.228) - [Next: c8.230](https://indike.org/pramana/ins.science.bag-1979.c8.230) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) ## Cites (1) - [Khaṇḍakhādyaka](https://indike.org/pramana/in.astro.siddhanta.karana.pracina.khandakhadyaka) — Brahmagupta, Sanskrit --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.229](https://indike.org/pramana/ins.science.bag-1979.c8.229) · Pramāṇa