Qib thiab radians yog ob chav rau ntsuas kaum. Lub voj voos muaj 360 degrees, uas yog sib npaug ntawm 2π radians, yog li 360 ° thiab 2π radians sawv cev rau tus lej suav rau mus "ib puag ncig" ib puag ncig. Suab tsis meej pem? Tsis txhob txhawj xeeb, koj tuaj yeem hloov pauv qib mus rau radians, lossis los ntawm radians mus rau qib, hauv ob peb kauj ruam yooj yim.
Xyaum Teeb Meem
Hloov Qib Kawm rau Radians Xyaum Teeb Meem
Txhawb wikiHow thiab qhib tag nrho cov qauv.
Hloov Qib Kawm rau Radians Xyaum Ua Teeb Meem teb yam KEY
Txhawb wikiHow thiab qhib tag nrho cov qauv.
Cov kauj ruam
Kauj Ruam 1. Sau tus lej uas koj xav hloov mus rau radians
Cia peb ua haujlwm nrog qee qhov piv txwv yog li koj yeej tau txais lub tswv yim qis. Nov yog cov piv txwv koj yuav ua haujlwm nrog:
- Piv txwv 1: 120°
- Piv txwv 2: 30°
- Piv txwv 3: 225°
Kauj Ruam 2. Muab tus lej sib npaug ntawm π/180
Txhawm rau nkag siab tias vim li cas koj yuav tsum ua qhov no, koj yuav tsum paub tias 180 degrees yog π radians. Yog li, 1 degree sib npaug rau (π/180) radians. Txij li thaum koj paub qhov no, txhua yam koj yuav tsum ua yog muab tus lej qib uas koj tab tom ua haujlwm los ntawm π/180 los hloov nws mus rau cov ntsiab lus radian. Koj tuaj yeem tshem daim ntawv pov thawj qib txij li koj cov lus teb yuav nyob rau hauv radians lawm. Nov yog yuav teeb nws li cas:
- Piv txwv 1120 x π 180 hli
- Piv txwv 230 x π 180
- Piv txwv 3: 225 x π 180 hli
Kauj Ruam 3. Ua lej
Tsuas yog ua cov txheej txheem sib npaug, los ntawm kev sib npaug tus lej ntawm degrees/180. Xav txog nws zoo li muab faib ua ob feem: thawj feem muaj tus lej ntawm qib ntawm tus lej thiab "1" hauv cov lej, thiab cov feem thib ob muaj π hauv tus lej thiab 180 hauv cov lej. Nov yog qhov koj ua lej:
- Piv txwv 1: 120 x π/180 = 120π/180
- Piv txwv 2: 30 x π/180 = 30π/180
- Piv txwv 3: 225 x π/180 = 225π/180
Kauj Ruam 4. Yooj Yim
Tam sim no, koj yuav tsum tso txhua feem hauv nqe qis tshaj kom tau txais koj cov lus teb kawg. Nrhiav tus lej loj tshaj plaws uas tuaj yeem faib ua tus lej thiab tus lej ntawm txhua feem thiab siv nws kom yooj yim rau txhua feem. Tus lej loj tshaj plaws rau thawj tus piv txwv yog 60; rau qhov thib ob, nws yog 30, thiab rau qhov thib peb, nws yog 45. Tab sis koj tsis tas yuav tsum paub tam sim ntawd; koj tuaj yeem sim ua ntej los ntawm kev sim faib tus lej thiab cov lej ua 5, 2, 3, lossis yam haujlwm twg. Nov yog koj ua nws li cas:
- Piv txwv 1: 120 x π/180 = 120π/180 ÷ 60/60 = 2/3π radians
- Piv txwv 2: 30 x π/180 = 30π/180 ÷ 30/30 = 1/6π radians
- Piv txwv 3: 225 x π/180 = 225π/180 ÷ 45/45 = 5/4π radians
Kauj Ruam 5. Sau koj cov lus teb
Txhawm rau kom meej, koj tuaj yeem sau dab tsi koj qhov ntsuas qhov qub tau dhau los thaum hloov pauv mus rau radians. Tom qab ntawd, koj ua tiav! Nov yog yam koj ua:
- Piv txwv 1: 120 ° = 2/3 π radians
- Piv txwv 2: 30 ° = 1/6π radians
- Piv txwv 3: 225 ° = 5/4π radians