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**Bhaskara**was an Indian mathematician of the 7th century, who probably lived between c. 600- c.680. There is very little information about Bhaskara’s life. It is said that he was born near Saurashtra in Gujrat and died in Ashmaka, Andhra Pradesh, India. His father in astronomy educated him. Bhaskara is considered a follower of Aryabhatta I and one of the most renowned scholars of Aryabhatta’s astronomical school.

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**Bhaskara**wrote two treatises, the

*Mahabhaskariya*(Great book of Bhaskara ) and the

*Laghubhaskariya*(Small book of Bhaskara). He also wrote commentaries on the work of Aryabhatta I entitled Aryabhatiyabhasya. The

*Mahabhaskariya*comprises of eight chapters dealing with mathematical astronomy. The formula which Bhaskara gives is amazingly accurate and use of the formula leads to a maximum error of less than one percent. The formula is :

Sine x = 16x ( ð – x ) / [ 5 ð2 – 4x ( ð – x) ]

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__Bhaskara perpetual motion wheel.__