Video: Leej twg invented lub tsev vajvoog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
90 - 168 AD Claudius Ptolemy nthuav dav rau Hipparchus chords hauv ib qho lub voj voog.
Tsis tas li ntawd, lub voj voog unit tuaj qhov twg?
Hauv lej, a unit lub voj voog yog ib lub voj voog nrog chav tsev lub vojvoog. Feem ntau, tshwj xeeb tshaj yog nyob rau hauv trigonometry, lub unit lub voj voog yog tus lub voj voog ntawm lub vojvoog ib qho chaw nyob rau hauv keeb kwm (0, 0) nyob rau hauv lub Cartesian coordinate system nyob rau hauv lub Euclidean dav hlau.
Tsis tas li ntawd, leej twg nrhiav tau kev txhaum cos thiab tan? Thawj lub rooj trigonometric tau pom meej tso ua ke los ntawm Hipparchus ntawm Nicaea (180 - 125 BCE), uas yog tam sim no lub npe hu ua "leej txiv ntawm trigonometry." Hipparchus yog thawj zaug los tabulate qhov tseem ceeb ntawm arc thiab chord rau ib lub kaum ntse ntse.
Lub hom phiaj ntawm lub voj voog unit yog dab tsi?
Cov unit vajvoog ,lub trig lub voj voog Raws li nws tseem paub, yog qhov tseem ceeb kom paub vim tias nws cia peb yooj yim xam cov cosine, sine, thiab tangent ntawm ib lub kaum sab xis ntawm 0 ° thiab 360 ° (los yog 0 thiab 2π radians).
Vim li cas lub voj voog chav tsev tseem ceeb rau trigonometry?
Cov unit vajvoog yog ib qho cuab yeej siv feem ntau hauv trigonometry vim nws pab tus neeg siv kom nco qab cov ces kaum tshwj xeeb thiab lawv trigonometric muaj nuj nqi. Cov unit vajvoog yog a lub voj voog kos nrog nws qhov chaw ntawm keeb kwm ntawm daim duab (0, 0), thiab nrog lub vojvoog ntawm 1.
Pom zoo:
Leej twg invented txoj cai ntawm sines?
Nrog rau kev ntsuas ntawm ob sab thiab lub kaum sab xis, qhov no tuaj yeem ua rau ib lossis ob daim duab peb sab. Johannes von Muller yog tus uas nrhiav tau Txoj Cai ntawm Sines. Muller yug kuv Lub Ib Hlis 3, 1752, hauv ib lub nroog me me hauv qab Franconia (Dukedom of Coburg)
Leej twg invented exponents thiab powers?
Nicolas Chuquet siv ib daim ntawv ntawm exponential notation nyob rau hauv lub xyoo pua 15th, uas tom qab ntawd tau siv los ntawm Henricus Grammateus thiab Michael Stifel nyob rau hauv lub xyoo pua 16th. Lo lus 'exponent' tau coined nyob rau hauv 1544 los ntawm Michael Stifel
Leej twg invented av qeeg tswb?
Zhang Heng
Leej twg invented zoo sib xws?
Hauv geometry, ob daim duab tau hais tias zoo sib xws yog tias lawv muaj (ib qho thiab) tib yam, tab sis tsis tas yuav tsum muaj qhov loj me. Lub cim '~' uas peb siv los qhia qhov zoo sib xws yog vim tus lej German Gottfried Wilhelm Leibniz (1646-1716)
Leej twg yog leej niam leej txiv pab txhawb cytoplasmic qub txeeg qub teg?
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