Video: Vim li cas sin30 sin 150?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
nws yog vim lub reference kaum rau 150 yog sib npaug rau 30. qhov siv lub kaum sab xis yog lub kaum sab xis nyob rau hauv daim duab peb sab tsim los ntawm xa me nyuam rov rau ib tug perpendicular mus rau lub x-axis ntawm chav tsev voj voog. ntawm no yog daim duab kos ntawm 30 degrees thiab 150 degrees ntawm chav tsev voj voog thiab cov duab peb sab tsim. lub kaum sab xis 30 degree yog nyob rau hauv quadrant 1.
Ib sab ntawm no, dab tsi yog qhov tseeb ntawm kev txhaum 150 degrees?
Yog li ntawd, vim 150 =1/2.
Tsis tas li ntawd, tus nqi ntawm kev txhaum pi yog dab tsi? Cov tus nqi ntawm Cos piv = -1 thiab Sin pib =0. Lub sijhawm ntawm kev txhaum Nws tseem yog 2pi lossis 360 ° thiab nws tus nqi rov ua dua tom qab 2pi lossis 360 °.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog tus nqi ntawm kev txhaum 120?
Tab sis nyob rau hauv degrees nws yog vim 120 =(✓3)/2. Muaj txoj cai ntiv tes xoo yooj yim rau qhov no. kev txhaum (90+ x) = + cos x (si kev txhaum x yog qhov zoo hauv qhov thib ob quadrant.)
Tus nqi ntawm kev txhaum 270 yog dab tsi?
| θ | sin θ | cov θ |
|---|---|---|
| 90° | 1 | 0 |
| 180° | 0 | −1 |
| 270° | −1 | 0 |
| 360° | 0 | 1 |
Pom zoo:
Puas yog sin squared x sib npaug rau sin x squared?
Yog nws yog. sin^2x yog tib yam assinx^2 vim hais tias nyob rau hauv ob qho tib si lub '^2' cuam tshuam rau x
Yuav ua li cas yog vim li cas vim li cas lub epigenome hloov?
Kev ua neej nyob thiab ib puag ncig (xws li kev haus luam yeeb, noj zaub mov thiab kab mob sib kis) tuaj yeem ua rau tus neeg muaj kev ntxhov siab uas ua rau muaj tshuaj lom neeg. Cov lus teb no, dhau los, feem ntau ua rau muaj kev hloov pauv hauv epigenome, qee qhov tuaj yeem ua rau puas tsuaj
Koj siv 150 nplai li cas?
Koj tuaj yeem hais tias, 1 units hauv daim duab yog sib npaug rau 10 units hauv lub neej tiag tiag. Raws li cov lej hauv qhov ntsuas tau loj dua, piv txwv li 1: 50 - 1: 200, cov ntsiab lus hauv daim duab tau me dua. Qhov no yog vim hais tias hauv daim duab ntawm 1: 50 muaj 1 chav rau txhua 50 chav nyob hauv lub neej tiag tiag
Puas muaj peev xwm hluav taws xob thiab lub zog muaj peev xwm tib yam Vim li cas lossis vim li cas ho tsis?
Lub zog muaj peev xwm hluav taws xob Ue yog lub zog muaj peev xwm khaws cia thaum cov nqi tawm ntawm qhov sib npaug (xws li lub zog muaj peev xwm gravitational). Lub peev xwm hluav taws xob zoo ib yam, tab sis ib tus nqi, Ueq. Ib qho hluav taws xob muaj peev xwm sib txawv ntawm ob lub ntsiab lus hu ua voltage, V = Ue2q−Ue1q
Vim li cas nws thiaj li siv 150 xyoo rau txoj kev xav ntawm tes?
Vim li cas nws thiaj li siv sijhawm 150 xyoo rau txoj kev xav ntawm tes los tsim tom qab siv lub tshuab tsom iav? vim hais tias tshuab microscope tsis tau txhim kho kom txog thaum ntawd thiab tam sim no muaj tseeb kev soj ntsuam. Cov cork hlwb uas Hooke pom yog cov seem ntawm cov nroj tsuag tuag