Video: Dab tsi yog tangent cosine thiab sine?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev txhaum yog sib npaug rau sab opposite lub kaum sab xis uas koj tab tom ua cov haujlwm ntawm lub hypotenuse uas yog sab ntev tshaj plaws hauv daim duab peb sab. Cos yog nyob ib sab ntawm hypotenuse. Thiab tan yog opposite tshaj nyob ib sab, uas txhais tau tias tan yog kev txhaum / cos . Qhov no tuaj yeem ua pov thawj nrog qee qhov yooj yim algebra.
Sib piv, Sine cosine thiab tangent txhais li cas?
Cov cosine (feem ntau abbreviated " cos ") yog qhov piv ntawm qhov ntev ntawm sab uas nyob ib sab mus rau lub kaum sab xis rau qhov ntev ntawm lub hypotenuse. Thiab cov tangent (feem ntau abbreviated " tan ") yog qhov piv ntawm qhov ntev ntawm sab opposite lub kaum sab xis rau qhov ntev ntawm sab uas nyob ib sab. SOH → sin = "opposite" / "hypotenuse"
Kuj Paub, dab tsi yog sine thiab cosine? Sine thiab cosine - a.k.a., kev txhaum (θ) thiab cos (θ) - yog cov haujlwm uas qhia cov duab ntawm txoj cai daim duab peb sab. Saib tawm ntawm lub vertex nrog lub kaum sab xis θ, kev txhaum (θ) yog qhov piv ntawm sab nraud rau lub hypotenuse, thaum cos (θ) yog qhov piv ntawm sab uas nyob ib sab mus rau lub hypotenuse.
Tom qab ntawd, lo lus nug yog, qhov twg sine cosine thiab tangent tuaj ntawm?
Los ntawm qhov twg ua cov npe sib , cosine , tangent thiab cotangent los ntawm ? Sine Lub npe sib tuaj rau peb los ntawm Latin sinus, ib lo lus hais txog qhov nkhaus, quav, lossis hollow. Nws yog feem ntau txhais raws li lub quav ntawm ib lub tsoos tsho, uas tau siv raws li peb yuav siv lub hnab tshos niaj hnub no.
tangent sib npaug li cas?
Nyob rau hauv ib daim duab peb sab, lub tangent ntawm ib lub kaum sab xis yog qhov ntev ntawm qhov opposite sab muab faib los ntawm qhov ntev ntawm sab uas nyob ib sab. Nyob rau hauv txhua txoj cai daim duab peb sab, lub tangent ntawm lub kaum sab xis yog qhov ntev ntawm sab nraud (O) muab faib los ntawm qhov ntev ntawm sab uas nyob ib sab (A). Nyob rau hauv ib tug formula, nws yog sau yooj yim li ' tan '.
Pom zoo:
Sociobiology yog dab tsi thiab dab tsi yog qhov kev thuam loj ntawm nws?
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Dab tsi yog theem sib txawv ntawm sine thiab cosine nthwv dej?
Thaum lub cos nkhaus nyob rau ntawm lub ncov yog li theta yuav tsum yog 0 degrees. Yog li cov cosine yoj yog 90 degrees tawm ntawm theem tom qab sine yoj los yog 270 degrees tawm ntawm theem nyob rau hauv pem hauv ntej ntawm lub sine yoj
Dab tsi yog qhov sau thiab ntau ntawm sine muaj nuj nqi?
Cov haujlwm sine thiab cosine muaj lub sijhawm ntawm 2π radians thiab tangent muaj nuj nqi muaj aperiod ntawm π radians. Domain thiab ntau yam: Los ntawm graphsabove peb pom tias rau ob qho tib si sine thiab cosinefunctions tus sau yog txhua tus lej tiag thiab qhov ntau yog txhua qhov tseeb ntawm & rho tawm 1 txog +1 suav nrog
Txoj cai ntawm sine thiab cosine yog dab tsi?
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Cov lus sine cosine thiab tangent los ntawm qhov twg?
Etymology ntawm cosine:'los ntawm co- prefix + sine. Lub Latin cosinus tshwm sim hauv Gunther Canon Triangulorum (1620).' Etymology ntawm lo lus tangent:'adaptation of Latin tangens, tangent-em, tam sim no participle of tang-ĕre to touch; siv los ntawm Th. Fincke, 1583, raws li lub npe hauv kev nkag siab = Latin līnea tangens tangent lossis kov kab