[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) › c8.51 # Mathematics in Ancient and Medieval India c8.51 Mathematics in Ancient and Medieval India c8.51 - **Language:** English ### [c8.51](https://indike.org/pramana/ins.science.bag-1979.c8.51) II. 'Twice any desired arc is substracted from 90°; the \*Jyā\* of the remainder is subtracted from the radius. The square-root of the result multiplied by sixty (i.e. half, of the radius) is the \*Jyā\* of that arc. By deducting that square (i.e. Jya²A) from the square of the radius, the square of \*Kojyā\* is obtained.¹ - [Previous: c8.50](https://indike.org/pramana/ins.science.bag-1979.c8.50) - [Next: c8.52](https://indike.org/pramana/ins.science.bag-1979.c8.52) - [Up: c8](https://indike.org/pramana/ins.science.bag-1979.c8) --- Source: [https://indike.org/pramana/ins.science.bag-1979.c8.51](https://indike.org/pramana/ins.science.bag-1979.c8.51) · Pramāṇa