3 700 år gammal babylonisk lertavla visar att trigonometrin upptäcktes före grekerna
telegraph.co.uk/science/2017/08/24/3700-year-...
telegraph.co.ukPosted Aug 25, 2017, 12:20 PM UTC
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telegraph.co.uktelegraph.co.ukPosted Aug 25, 2017, 12:20 PM UTC