[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) › c8.165 # Mathematics in Ancient and Medieval India c8.165 Mathematics in Ancient and Medieval India c8.165 - **Language:** English ### [c8.165](https://indike.org/pramana/ins.science.bag-1979.c8.165) Mādhava (\*Āryabhaṭīyabhāṣya\*, TSS 101, p. 58) used the following result to obtain the formula : R Sin (A ± B) = √((R Sin A)² - (lamba)²) ± √((R Sin B)² - (lamba)²) where lamba = (R Sin A.R Sin B)/R - [Previous: c8.164](https://indike.org/pramana/ins.science.bag-1979.c8.164) - [Next: c8.166](https://indike.org/pramana/ins.science.bag-1979.c8.166) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.165](https://indike.org/pramana/ins.science.bag-1979.c8.165) · Pramāṇa