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  • Powerpoint Slides : trigonometry for class 11th >> Browse by Author >> Browse by Institute
     
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    History Of Trigonometry . Trigonometry was originally created by the Greeks History Of Trigonometry . Trigonometry was originally created by the Greeks to help in the study of astronomy; Hipparchus of Bithynia (190-120 B.C.) used trig ratios to ...
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