De digitale vraagbaak voor het wiskundeonderwijs
De uitvinder van tangens, sinus en cosinus
Wie is de uitvinder van tangens, sinus en cosinus?
Wat lees ik hier: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.
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