Quadrant I: Ob leeg x thiab y-coordinate yog qhov zoo. Quadrant II: x-coordinate yog qhov tsis zoo thiab y-coordinate yog qhov zoo. Quadrant III: Ob leeg x thiab y-coordinate yog qhov tsis zoo. Quadrant IV: x-coordinate yog qhov zoo thiab y-coordinate yog negative.
Yuav ua li cas zoo nyob rau hauv plaub plaub?
Hauv plaub plaub, qhov txiaj ntsig rau cos yog qhov zoo xwb. Qhov no tuaj yeem suav tau raws li hauv qab no: Hauv plaub plaub plaub, Cos yog qhov zoo, hauv thawj, Txhua tus yog qhov zoo, hauv qhov thib ob, Kev txhaum yog qhov zoo thiab hauv peb plaub, Tan yog qhov zoo. Qhov no yog ib qho yooj yim kom nco qab, txij li nws spell "cast".
Qab 4 yog dab tsi?
Thawj plaub plaub muaj ob qhov zoo x, thiab y ua haujlwm. Lub plaub plaub muaj qhov zoo x kev tswj hwm tab sis tsis zoo y tswj hwm. Lub ntsiab lus muab yog nyob rau ntawm ciam teb ntawm cov quadrants qhov twg x coordinates yog zoo thiab y coordinate yog ib txwm 0; nws hu ua qhov zoo x axis.
Puas sine muaj nuj nqi zoo hauv quadrant 4?
Sine thiab cosecant yog qhov zoo hauv Quadrant 2, tangent thiab cotangent yog qhov zoo hauv Quadrant 3, thiab cosine thiab secant yog qhov zoo hauv Quadrant 4.
Puas yog hypotenuse tsis zoo nyob rau hauv 4th plaub?
Nyob rau hauv quadrant IV lub hypotenuse thiab sab uas nyob ib sab yog qhov zoo thaum sab nraud yog qhov tsis zoo. Qhov no txhais tau hais tias tsuas yog cosine thiab nws qhov sib koom ua kezoo.
