[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) › c8.62 # Mathematics in Ancient and Medieval India c8.62 Mathematics in Ancient and Medieval India c8.62 - **Language:** English ### [c8.62](https://indike.org/pramana/ins.science.bag-1979.c8.62) These are identical with modern formulae respectively as follows : $√(1-Sin² A) = Cos A and Cos A = Sin((π)/2-A)$ - [Previous: c8.61](https://indike.org/pramana/ins.science.bag-1979.c8.61) - [Next: c8.63](https://indike.org/pramana/ins.science.bag-1979.c8.63) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.62](https://indike.org/pramana/ins.science.bag-1979.c8.62) · Pramāṇa