Video: Kev txhaum 45 yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub sine yog txhais raws li qhov piv ntawm qhov tawm tsam sab thiab lub hypothenuse. Yog li ntawd, sib 45 o = 1 √2 = √22. Hauv daim ntawv decimal, nws yog kwv yees li 0.7071067812.
Yog li ntawd, dab tsi yog tus nqi ntawm kev txhaum 45 degree hauv feem?
Qhov tseeb tus nqi ntawm kev txhaum ntawm 45 degrees hauv feem yog 1√2. Nws yog tus lej irrational thiab yog sib npaug rau 0.7071067812… hauv daim ntawv decimal. Cov tus nqi ntawm kev txhaum ntawm lub kaum sab xis 45 degrees yog suav tias yog 0.7071 kwv yees li hauv lej.
Ib yam li ntawd, tus nqi ntawm kev txhaum 45 cos 45 yog dab tsi? Qhov tseeb tus nqi ntawm kev txhaum ( 45 ) kev txhaum ( 45 ) yog √22 2 2. Qhov tseeb tus nqi ntawm cos ( 45 ) cos ( 45 ) yog √22 2 2. Simplify cov ntsiab lus.
Tsis tas li ntawd, kev txhaum 45 thiab cos 45 puas zoo ib yam?
Hauv ob qho xwm txheej, cov cosine yog lub sine ntawm lub complementary lub kaum sab xis. Nyob rau hauv tas li ntawd, 30 degrees thiab 60 degrees yog complementary ces kaum cosine ntawm ib tug yog lub txim ntawm lwm tus. Hauv qhov no, 45 degree thiab 45 degrees yog complementary ces kaum cosine ntawm ib tug yog lub txim ntawm lwm tus.
Dab tsi yog qhov tseeb ntawm tan 45 degrees?
Teb thiab piav qhia: Lub pes tsawg tus nqi ntawm tan ( 45 °) yog 1. Qhov no yog ib qho ntawm cov kev paub zoo trigonometric ua haujlwm uas ntau tus tau muab tso rau hauv kev nco.
Pom zoo:
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