Rahila Ahmed
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repala venugopal
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Mitesh Sharma
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Posted 3 year ago Mitesh Sharma

The first known table of chords was produced by the Greek mathematician Hipparchus in about 140 BC. Although these tables have not survived, it is claimed that twelve books of tables of chords were written by Hipparchus. This makes Hipparchus the founder of trigonometry.

Ratna mala
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