[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) › c8.81 # Mathematics in Ancient and Medieval India c8.81 Mathematics in Ancient and Medieval India c8.81 - **Language:** English ### [c8.81](https://indike.org/pramana/ins.science.bag-1979.c8.81) $Sin((π)/4 ± A/2) = √((1 ± Sin A)/2)$ - [Previous: c8.80](https://indike.org/pramana/ins.science.bag-1979.c8.80) - [Next: c8.82](https://indike.org/pramana/ins.science.bag-1979.c8.82) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.81](https://indike.org/pramana/ins.science.bag-1979.c8.81) · Pramāṇa