[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) › c8.152 # Mathematics in Ancient and Medieval India c8.152 Mathematics in Ancient and Medieval India c8.152 - **Language:** English ### [c8.152](https://indike.org/pramana/ins.science.bag-1979.c8.152) or, R Sin (90°-2 A)=R-((R Sin A)²)/(R/2) - [Previous: c8.151](https://indike.org/pramana/ins.science.bag-1979.c8.151) - [Next: c8.153](https://indike.org/pramana/ins.science.bag-1979.c8.153) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.152](https://indike.org/pramana/ins.science.bag-1979.c8.152) · Pramāṇa