[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.s6.56 # A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s6.56 A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s6.56 - **Language:** English ### [c8.s6.56](https://indike.org/pramana/ins.science.sarma-1972.c8.s6.56) Using the above relationship of the diameter and the circumference, Mādhava has derived the 24 mahājyās (accurate sign-chords) which he has depicted in the mnemonic beginning with śreṣṭham nāma variṣṭhanām (0°—224′—50″—22″).¹ It has also been verified that the value of the radian assumed by Mādhava in this evaluation corresponds to 3437′—44″—48″—22″, which is remarkably close to its modern approximation, viz., 3437′.74577978 = 3437′—44′—48″—22″, 49.² - [Previous: c8.s6.55](https://indike.org/pramana/ins.science.sarma-1972.c8.s6.55) - [Next: c8.s6.57](https://indike.org/pramana/ins.science.sarma-1972.c8.s6.57) - [Up: c8.s6](https://indike.org/pramana/ins.science.sarma-1972.c8.s6) --- Source: [https://indike.org/pramana/ins.science.sarma-1972.c8.s6.56](https://indike.org/pramana/ins.science.sarma-1972.c8.s6.56) · Pramāṇa