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Koj paub li cas trigonometric piv siv?
Koj paub li cas trigonometric piv siv?

Video: Koj paub li cas trigonometric piv siv?

Video: Koj paub li cas trigonometric piv siv?
Video: ICU Vol.3 - Pau li nyoo koj 2024, Kaum ib hlis
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Muaj peb kauj ruam:

  1. Xaiv qhov twg trig ratio siv . - Xaiv qhov kev txhaum, cos, lossis tan los ntawm kev txiav txim siab koj sab twg paub thiab sab twg koj tab tom nrhiav.
  2. Hloov.
  3. daws.
  4. Kauj ruam 1: Xaiv qhov twg trig ratio siv .
  5. Kauj Ruam 2: Hloov.
  6. Kauj Ruam 3: daws.
  7. Kauj ruam 1: Xaiv qhov trig ratio siv .
  8. Kauj Ruam 2: Hloov.

Hais txog qhov no, SOH CAH TOA yog dab tsi?

SOHCAHTOA . Ib txoj hauv kev ntawm kev nco qab yuav ua li cas suav cov sine, cosine, thiab tangent ntawm lub kaum sab xis. SOH sawv cev rau Sine sib npaug sib npaug sib npaug ntawm Hypotenuse. CAH sawv cev rau Cosine sib npaug ntawm Adjacent tshaj Hypotenuse. TOA sawv cev rau Tangent sib npaug sib npaug sib npaug tshaj Adjacent.

Tom qab ntawd, lo lus nug yog, yuav ua li cas kuv thiaj nrhiav tau qhov ntev ntawm daim duab peb sab? Hauv txoj cai no daim duab peb sab , koj tau txais kev ntsuas rau lub hypotenuse, c, thiab ib ceg, b. Lub hypotenuse yeej ib txwm rov qab lub kaum sab xis thiab nws yog qhov ntev tshaj plaws sab ntawm daim duab peb sab . Rau nrhiav tus ntev ntawm ceg a, hloov qhov paub qhov tseem ceeb rau hauv Pythagorean Theorem. daws rau a2.

Kuj paub, ua li cas koj pom lub kaum sab xis uas ploj lawm?

Txhawm rau txiav txim siab ntsuas qhov tsis paub lub kaum sab xis , nco ntsoov siv tag nrho cov lej ntawm 180 °. Yog ob lub kaum sab xis muab, ntxiv rau lawv ua ke thiab rho tawm ntawm 180 °. Yog ob lub kaum sab xis yog tib yam thiab tsis paub, rho tawm cov paub lub kaum sab xis ntawm 180 ° thiab ces faib los ntawm 2.

Koj pom qhov tangent ntawm lub kaum sab xis li cas?

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). Hauv ib qauv , nws yog sau yooj yim li 'tan'.

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