Saib tawm ntawm lub vertex nrog lub kaum sab xis θ, sin(θ) yog qhov piv ntawm sab nraud mus rau hypotenuse, thaum cos(θ) yog qhov piv ntawm qhov nyob ib sab sab rau lub hypotenuse.
Vim li cas sine sib npaug rau opposite tshaj hypotenuse?
Lub sine yog ib txwm ntsuas ntawm qhov ntxeev sab muab faib los ntawm kev ntsuas ntawm lub hypotenuseVim tias lub hypotenuse ib txwm yog sab ntev tshaj plaws, tus lej hauv qab ntawm qhov piv yuav ib txwm yuav loj dua qhov saum toj. … Yog li, sab nraud yog 6 ntiv tes ntev. Siv qhov piv rau sine, opposite tshaj hypotenuse.
Dab tsi yog kev txhaum nyob ib sab ntawm hypotenuse?
Peb yuav hu qhov sib piv ntawm sab nraud ntawm daim duab peb sab txoj cai rau lub hypotenuse lub sine thiab muab nws lub cim kev txhaum. sin=o / h. Qhov piv ntawm ib sab ntawm daim duab peb sab txoj cai rau lub hypotenuse yog hu ua lub cosine thiab muab lub cim cos.
Tus nqi ntawm kev txhaum yog dab tsi?
Peb paub tias cosecant yog qhov sib cuam tshuam ntawm sine. Txij li thaum sine yog qhov piv ntawm qhov opposite rau lub hypotenuse, cosecant yog qhov piv ntawm lub hypotenuse rau qhov opposite.
Puas yog kev txhaum 1 hypotenuse over opposite?
sin-1 siv qhov piv "opposite/hypotenuse" thiab muab rau peb angle.
