Kev sib txheeb ntawm ob sab ntawm daim duab peb sab yog dab tsi?
Kev sib txheeb ntawm ob sab ntawm daim duab peb sab yog dab tsi?

Video: Kev sib txheeb ntawm ob sab ntawm daim duab peb sab yog dab tsi?

Video: Kev sib txheeb ntawm ob sab ntawm daim duab peb sab yog dab tsi?
Video: 🔴Xov Xwm 13-03-2022:Tsov Rog Russia & Ukraine,2 Tug Thawj Coj Kev Sib Thaam Tsi Sib Haum 2024, Lub peb hlis ntuj
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Txoj Cai 2: Sab ntawm Daim duab peb sab -- Daim duab peb sab Theorem tsis sib xws: Cov theorem no hais tias qhov sib npaug ntawm qhov ntev ntawm ib qho 2 sab ntawm daim duab peb sab yuav tsum muaj ntau dua li tus thib peb sab .) Txoj Cai 3: Kev sib raug zoo ntawm kev ntsuas ntawm sab thiab cov ces kaum hauv a daim duab peb sab : Lub sab hauv loj tshaj plaws thiab sab yog opposite txhua lwm yam.

Xav txog qhov no, kev sib raug zoo ntawm cov ces kaum thiab ob sab ntawm daim duab peb sab yog dab tsi?

Kev sib raug zoo ntawm ob sab thiab cov ces kaum . Hauv ib qho daim duab peb sab , loj tshaj plaws sab thiab loj tshaj kaum sab xis yog opposite ib leeg. Hauv ib qho daim duab peb sab , qhov tsawg tshaj plaws sab thiab tsawg tshaj plaws kaum sab xis yog opposite ib leeg. Hauv ib qho daim duab peb sab , qhov nruab nrab qhov loj me sab thiab nruab nrab qhov loj me kaum sab xis yog opposite ib leeg.

Ib yam nkaus, sab twg ntawm daim duab peb sab ntev tshaj? Ob sab ntawm daim duab peb sab sab xis muaj ntau lub npe sib txawv: Sab ntev tshaj plaws, sab xis kaum sab xis , e npe hypotenuse . Hauv daim duab, tus hypotenuse tau sau npe c. Lwm ob sab hu ua ob txhais ceg ntawm daim duab peb sab.

Qhov thib ob, kev sib raug zoo ntawm ob sab ntawm daim duab peb sab yog dab tsi?

Cov kev sib raug zoo ntawm ob sab thiab cov ces kaum ntawm a txoj cai daim duab peb sab yog lub hauv paus rau trigonometry. Cov sab opposite ua txoj cai lub kaum sab xis yog hu ua hypotenuse ( sab c hauv daim duab). Cov sab nyob ib sab ntawm txoj cai lub kaum sab xis yog hu ua ob txhais ceg (lossis catheti, ib leeg: cathetus).

Puas muaj kev sib raug zoo ntawm qhov ntev ntawm ib sab ntawm daim duab peb sab thiab ntsuas ntawm lub kaum sab xis nws?

os ob sab hauv a daim duab peb sab muaj tib yam ntev , tiam rov qab cov ces kaum muaj tib yam ntsuas . Thiab, yog ob cov ces kaum hauv a daim duab peb sab muaj tib yam ntsuas , tiam ob sab muaj tib yam ntev.

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