Cov txheej txheem:

Tus qauv trigonometric yog dab tsi?
Tus qauv trigonometric yog dab tsi?

Video: Tus qauv trigonometric yog dab tsi?

Video: Tus qauv trigonometric yog dab tsi?
Video: Maiv Xis Xyooj Khaus Pim | Tub Siab Loj Xa Lus Rau Maiv Xis Xyooj 2024, Kaum ib hlis
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Lub rau trigonometric kev ua haujlwm yog sine, cosine, secant, co-secant, tangent thiab co-tangent. Los ntawm kev siv lub kaum sab xis ntawm daim duab peb sab ua ib qho kev siv, lub trigonometric cov dej num los yog tus kheej yog muab los ntawm: sin θ = Sab Nraud / Hypotenuse. sec θ = Hypotenuse/Adjacent Side.

Ib yam li ntawd, cov qauv rau sin cos thiab tan yog dab tsi?

Cov dej num ntawm kev txhaum, cos thiab tan tuaj yeem xam raws li hauv qab no:

  • Sine Function: sin(θ) = Rov qab / Hypotenuse.
  • Cosine Function: cos(θ) = Adjacent / Hypotenuse.
  • Tangent muaj nuj nqi: tan(θ) = Rov qab / nyob ib sab.

Ib yam li ntawd, 6 trigonometric functions yog dab tsi? Rau txhua daim duab peb sab, muaj rau trig ratios: Sine ( kev txhaum ), cosine ( cos ), tangent (tan), cosecant (csc), secant (sec), thiab cotangent (cot).

Yog li ntawd, dab tsi yog trigonometric identities?

Hauv lej, trigonometric tus kheej yog kev sib npaug uas koom nrog trigonometric functions thiab muaj tseeb rau txhua tus nqi ntawm qhov tshwm sim variables uas ob sab ntawm qhov sib npaug yog txhais. Geometrically, cov no yog tus kheej koom nrog qee yam haujlwm ntawm ib lossis ntau lub ces kaum.

tan sib npaug li cas?

Lub tangent ntawm x txhais tau tias yog nws cov sine faib los ntawm nws cov cosine: tan x = sin x cos x. Lub secant ntawm x yog 1 muab faib los ntawm cov cosine ntawm x: sec x = 1 cos x, thiab cov cosecant ntawm x txhais tau tias yog 1 faib los ntawm cov sine ntawm x: csc x = 1 sin x.

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