[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of the Kerala School of Hindu Astronomy (in Perspective)](https://indike.org/pramana/ins.science.sarma-1972) › c8.s5.5 # A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s5.5 A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s5.5 - **Language:** English ### [c8.s5.5](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.5) Thus, if a, b, c, d are the sides and r the circum-radius, - [Previous: c8.s5.4](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.4) - [Next: c8.s5.6](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.6) - [Up: c8.s5](https://indike.org/pramana/ins.science.sarma-1972.c8.s5) --- Source: [https://indike.org/pramana/ins.science.sarma-1972.c8.s5.5](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.5) · Pramāṇa