Video: CscX yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov cotangent ntawm x txhais tau tias yog cosine ntawm x muab faib los ntawm sine ntawm x: cot x = cos x sin x. Lub secant ntawm x yog 1 muab faib los ntawm cosine ntawm x: sec x = 1 cos x, thiab cov cosecant ntawm x txhais tau tias yog 1 faib los ntawm sine ntawm x: csc x ua = 1 sin x.
Ntxiv mus, CSC yog dab tsi inverse ntawm?) ( csc ua ) ( csc ua ) Cov cosecant yog qhov sib txuam ntawm sine. Nws yog qhov piv ntawm hypotenuse rau sab rov qab lub kaum sab xis muab rau hauv ib daim duab peb sab.
Ib tug kuj yuav nug, CSC puas yog kev hloov pauv ntawm kev txhaum? arcsin yog thim rov qab ntawm kev txhaum muaj nuj nqi. Lub ntsiab lus ntawd kev txhaum (arcsin(x)) = x. Cov cosecant yog qhov sib txawv ntawm cov sib ; lub arcsin ntawm x yog lub kaum sab xis uas nws sib yog x.
Tom qab ntawd, lo lus nug yog, qhov txawv ntawm cosine thiab Cosecant yog dab tsi?
Yog li lub reciprocal ntawm sine muaj nuj nqi hu ua cosecant thiab yog sib npaug rau lub hypotenuse / opposite. Lub reciprocal ntawm lub cosine kev ua haujlwm yog hu ua secant thiab sib npaug rau qhov hypotenuse / nyob ib sab, thiab qhov sib npaug ntawm qhov kev ua haujlwm tangent hu ua cotangent thiab sib npaug rau qhov nyob ib sab / rov qab.
Dab tsi yog qhov hloov pauv ntawm kev txhaum?
Qhov cuam tshuam ntawm kev ua txhaum yog kev ua haujlwm arcsin. Tab sis sib nws tus kheej, yuav tsis yog invertible vim nws tsis txhaj, yog li nws tsis yog bijective (invertible). Txhawm rau kom tau txais arcsine muaj nuj nqi peb yuav tsum txwv qhov chaw ntawm sib rau [-π2, π2].
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