[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) › c8.58 # Mathematics in Ancient and Medieval India c8.58 Mathematics in Ancient and Medieval India c8.58 - **Language:** English ### [c8.58](https://indike.org/pramana/ins.science.bag-1979.c8.58) This corresponds to our modern formula, $Sin²A = (Sin² 2A)/4 + (Versin² 2A)/4$ - [Previous: c8.57](https://indike.org/pramana/ins.science.bag-1979.c8.57) - [Next: c8.59](https://indike.org/pramana/ins.science.bag-1979.c8.59) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.58](https://indike.org/pramana/ins.science.bag-1979.c8.58) · Pramāṇa