# Bhāskara I

**Bhāskara** (c. 600 – c. 680) (commonly called **Bhaskara I** to avoid confusion with the 12th-century mathematician Bhāskara II) was a 7th-century mathematician and astronomer, who was the first to write numbers in the Hindu decimal system with a circle for the zero, and who gave a unique and remarkable rational approximation of the sine function in his commentary on Aryabhata's work.[1] This commentary, *Āryabhaṭīyabhāṣya*, written in 629 CE, is among the oldest known prose works in Sanskrit on mathematics and astronomy. He also wrote two astronomical works in the line of Aryabhata's school, the *Mahābhāskarīya* and the *Laghubhāskarīya*.[2]

Bhāskara I | |
---|---|

Born | c. 600 CE |

Died | c. 680 CE |

Nationality | Chalukya |

Occupation | Mathematician; scientist |

Known for | Bhaskara I's sine approximation formula |

On 7 June 1979 the Indian Space Research Organisation launched Bhaskara I honouring the mathematician.[3]