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    When were the terms cosine and cotangent first introduced into trigonometrical terminology?

    Question #38095. Asked by jasper9lives. (Aug 28 03 3:06 PM)


    fosse4

    		Oxford English Dictionary gives the first use of Cosine and Cotangent as 1635. (Both definitions are for mathematical use)

    Aug 28 03, 4:35 PM
    mochyn

    		GUNTER FROM CENTRAL PERK first started using these terms in 1620
    http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Gunter.html


    Aug 28 03, 4:48 PM

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