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jan 1, 140 BC - G: Hipparchus
Description:
Greece: Hipparchus develops the basis of trigonometry. In his work in astronomy, he completes the first scientific star catalog, mapping around 850 starts.
Added to timeline:
History of Mathematics 2019
By
Aly
16 Jul 2019
2
0
1313
Date:
jan 1, 140 BC
Now
~ 2166 years ago
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