Cov cosecant ntawm lub kaum sab xis ntawm daim duab peb sab yog kev sib raug zoo by faib qhov ntev ntawm lub hypotenuse los ntawm qhov ntev ntawm sab opposite rau lub muab lub kaum . Qhov no yog qhov sib txuam ntawm sine muaj nuj nqi sine muaj nuj nqi Lub cosine muaj nuj nqi yog cov x ua haujlwm ntawm lub voj voog thiabsine muaj nuj nqi yog y ua haujlwm. Txij li thaum lub voj voog chav tsev muaj lub vojvoog ib qho thiab nyob nruab nrab ntawm lub hauv paus chiv keeb, ob qho tib si sine thiab cosine oscillate ntawm qhov zoo thiab qhov tsis zoo. https://flexbooks.ck12.org › cbook › section › primary › lesson
Lub Tsev Neeg Sinusoidal Function | CK-12 Foundation
Yuav ua li cas koj pom cosecant ntawm lub voj voog?
Lub luag haujlwm cosecant yog qhov sib txuam ntawm sine muaj nuj nqi (cscx=1sinx) x=1 sin . Nws tuaj yeem pom rau lub kaum sab xis t los ntawm kev siv y -coordinate ntawm qhov cuam tshuam ntawm lub voj voog: csct=1y t=1 y.
Cscx yog dab tsi?
Lub cosecant yogqhov reciprocal ntawm sine. Nws yog qhov piv ntawm hypotenuse rau sab opposite ib lub kaum sab xis muab rau hauv ib daim duab peb sab.
Puas yog kev txhaum 1 tib yam li CSC?
sin−1x=sin−1 (x), qee zaum txhais li (sin(x))−1=1sin(x)=csc(x) lossis cosecant ntawm x, qhov sib txawv inverse (los yog reciprocal) ntawm trigonometric muaj nuj nqi sine (saib saum toj no rau ambiguity)
Yuav ua li cas koj pom kev txhaum 75 yam tsis muaj lub tshuab xam zauv?
sin(A + B)=sin A cos B +cos A sin B, peb nrhiav tau lub sine ntawm (45° + 30°) muab sine ntawm 75 degrees.
