Tus nqi ntawm kev txhaum 240 yog dab tsi?
Tus nqi ntawm kev txhaum 240 yog dab tsi?

Video: Tus nqi ntawm kev txhaum 240 yog dab tsi?

Video: Tus nqi ntawm kev txhaum 240 yog dab tsi?
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kev txhaum ( 240 ) = kev txhaum (60 + 180) = - kev txhaum 60.

Yog li ntawd, tus nqi ntawm CSC 240 yog dab tsi?

txij li thaum xwm 240 = 1 / vim 240 , cov xwm 240 kuj tsis zoo. lub kaum sab xis ntawm 240 Nws yog sib npaug zos rau 180 + 60 degrees. lub trigonometric functions ntawm lub kaum sab xis ntawm 240 degrees yog sib npaug rau trigonometric functions ntawm lub kaum sab xis ntawm 60 degrees tshwj tsis yog rau cov kos npe.

Ib sab saum toj no, dab tsi yog tus nqi ntawm sin120? Raws li peb txhua tus paub lub sine tus nqi ntawm qee lub ces kaum xws li: 30, 45, 60, 90, 180. Tab sis nyob rau hauv degrees nws yog sib 120 =(✓3)/2. Muaj txoj cai ntiv tes xoo yooj yooj yim rau qhov no.sin(90+x)=+cos x (vim sin x yog qhov zoo hauv qhov thib ob.)

Ib yam li ib tug yuav nug, dab tsi yog lub txaj ntawm 240 degrees?

Lub ntsiab lus tseem ceeb

θ° θradians cot (θ)
180° π N/A
210° 7 np6 -√3
225° 5 np/4 1
240° 4 np/3 -√3/3

Puas yog Cosecant hypotenuse hla rov qab?

Tab sis, cosecant yog qhov sib txuam ntawm sine ntawm A. Yog li sine ntawm A yog rov qab hypotenuse . Cosecant ofA yog hypotenuse tshaj opposite . Tam sim no, secant ntawm A yog thereciprocal. Yog li ntawd tsis yog nyob ib sab tshaj hypotenuse , uas peb tau txais los ntawm cah ib feem ntawm soh cah toa, nws yog hypotenuseover nyob sib ze.

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