[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) › c8.153 # Mathematics in Ancient and Medieval India c8.153 Mathematics in Ancient and Medieval India c8.153 - **Language:** English ### [c8.153](https://indike.org/pramana/ins.science.bag-1979.c8.153) or Sin (90°-2A)=1-2 Sin² A. - [Previous: c8.152](https://indike.org/pramana/ins.science.bag-1979.c8.152) - [Next: c8.154](https://indike.org/pramana/ins.science.bag-1979.c8.154) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.153](https://indike.org/pramana/ins.science.bag-1979.c8.153) · Pramāṇa