Nyob rau hauv quadrant kuv, uas yog "A," tag nrho rau rau trigonometric functions yog qhov zoo. Hauv quadrant II , "Smart," tsuas yog sine thiab nws txoj haujlwm sib luag, cosecant, yog qhov zoo. Hauv quadrant III, "Trig," tsuas yog tangent thiab nws txoj haujlwm sib luag, cotangent cotangent Cotangent. Lub cotangent muaj nuj nqi yog qhov sib txuas ntawm txoj haujlwm tangent, thiab yog abbreviated li cot. Nws tuaj yeem piav qhia raws li qhov piv ntawm qhov ntev ntawm sab uas nyob ib sab mus rau qhov ntev ntawm lub hypotenuse nyob rau hauv daim duab peb sab. https://courses.lumenlearning.com › boundless-algebra › tshooj
Trigonometric Functions thiab Chav Tsev Vajvoog | Boundless Algebra
yog qhov zoo.
Qab twg yog sine thiab cosecant zoo?
Cov cim ntawm lub kaum sab xis hauv Quadrant
Yog li, hauv thawj plaub fab, qhov twg x thiab y kev tswj hwm yog qhov zoo, tag nrho rau qhov kev ua haujlwm trigonometric muaj txiaj ntsig zoo. Nyob rau hauv thib ob quadrant, tsuas yog sine thiab cosecant (lub reciprocal ntawm sine) yog qhov zoo. Hauv qhov thib peb quadrant, tsuas yog tangent thiab cotangent yog qhov zoo.
Qhov twg yog qhov zoo ntawm qhov twg?
In Quadrant I, ob qho tib si x- thiab y-coordinates yog qhov zoo; hauv Quadrant II, x-coordinate yog qhov tsis zoo, tab sis y-coordinate yog qhov zoo; hauv Quadrant III ob leeg tsis zoo; thiab hauv Quadrant IV, x yog qhov zoo tab sis y yog qhov tsis zoo.
Pab twg yog cosecant?
Tus cosecant yog qhov sib cuam tshuam ntawm sine. Nws yog qhov piv ntawm lub hypotenuse rau sab opposite amuab lub kaum sab xis hauv daim duab peb sab.
Nyob rau hauv dab tsi quadrants yog Secant negative?
Vim r yog lub vojvoog, nws yuav tsum yog qhov zoo, yog li sec(x) tsis zoo nyob qhov twg x yog qhov tsis zoo. Qhov no yog nyob rau hauv Quadrants II thiab III.
