Lagadha (लगध) is the author of Vedanga Jyotisha, the text on Vedicastronomy that has been dated to 1350 BC. This text describes rules for tracking the motions of the sun and the moon.
Lagadha praises astronomy as the crowning subject in the ancillary Vedic sciences.
Indian mathematicians were the pioneers of variable computations algebra for use in astronomical calculations along with trigonometry.
Lagadha (circa 1350-1200 BC) is the first person thought to have used geometry and trigonometry for astronomy, in his Vedanga Jyotisha.
Persian mathematician Omar Khayyám (1048-1131) combined trigonometry and approximation theory to provide methods of solving algebraic equations by geometrical means.
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