Pafupi sine zovuta cosine

Pafupi sine zovuta cosine!

Ophunzira ambiri mfundo sine, cosine, tangent, cotangent ngati zovuta, koma kwenikweni ndi wosavuta. Inu muyenera kuti muzione ena mwa mfundo ndi kuwamvetsa bwino okha.

Pakuti mwayi umenewu M'sitolo zipangizo pa dzanja, monga zolembera, mapensulo, stapler, highlighter, chofufutira, etc .. Ndipo ndithudi chingwe lonse ndi kuchita ziwonetsero. Zonse simudzavutika kuposa momwe inu mukuganizira!

Adzasonkhanitsa zinthu zathu makona bwino-angled ndi mbali A, B, C, ndi ngodya Y.

Ndale makona inu mukuti palibe kanthu chidwi, monga buku lililonse. Komabe lezani mtima ndipo tidzapitiriza. Tengani wolamulira nuyese mbali B, muli ndi mmene chinthu, kunena pensulo. M'litali a pensulo ndi kuwatchinjiriza zotsatira analandira miyezo kuti masentimita. mbali yathu B ndi tiyeni kuti masentimita atatu. Zoyezeka mbali A. asanu masentimita. Tsopano kugawa kutalika kwa mbali A uku B. kutalika Izi chiŵerengero A kwa B = A / B = 5/3, akhoza kugawidwa kwa B A kupeza 3/5, C kwa B, etc.

Ndipo tsopano kuonjezera makona. Zokulitsa dzanja A, B ndi C. Khalani mwa malo zinthu zake.

Tsopano mbali ya makona A, B, C kuwasandutsa D, G, L. Wauzimu mbali A ndi F, mtima wawo 10/6. Ndipo kotero A / F = 10/6 = 5/3. Kugwirizana ndi zipani zina zogwirizana komanso sanasinthe. Mukhoza kuyeza kutalika, ndi inu mungakhoze kukhulupirira izo. Ichi ndi malonda aliyense! Kodi amangosankha kusintha utali wa m'mbali mwa ufulu makona, kuwonjezeka, kuchepa, popanda kusintha mbali ya Y - ubale wa zipani nkhawa sizimasintha.

Ngati kusintha ngodya Y, kuwonjezera kapena kuchepa izo, mbali zonse kutali ubwenzi kusintha. Mudzionere nokha.

Monga analonjeza kale, chilichonse ndi yosavuta. Tiyeni tidze tanthauzo lake. Ubale mu amakona anayi mbali makona sikudalira utali wa m'mbali (pa ngodya yomweyo), koma kwambiri amadalira ngodya zimenezi. Ndi ubwenzi awa onse a maphwando kumene maina:

TCHIMO Y = A / C. Sine a mbali Y ndi chiŵerengero cha wakutsutsana (kutali ngodya) kuti hypotenuse lapansi.

Ko Y = B / C. Izi ngodya Y Cosine moyandikana mbali chiŵerengero (otsika) kuti hypotenuse lapansi.

Sine ndi cosine ndi ntchito trigonometric, ndi kumvetsa yosavuta ena chiwerengero zosiyana kwa wina njingayo. Mwamwayi zonse lophweka.

Sine ndi cosine ndi mwachindunji trigonometric ntchito. Otumphukira iwo udindo trigonometric monga tangent (tg x) ndi cotangent (ctg x).

Other ntchito trigonometric secant (gawo x) ndi csc (cosec x), koma nthawi zambiri iwo naye kawirikawiri. Kuwonjezera awa asanu, palinso zina kawirikawiri ntchito ntchito trigonometric (versinus etc.), ndi ntchito trigonometric (Arc sine, Arc cosine ndi T. D.).

Ine ndikuyembekeza inu nonse mukumvetsa, ndi lingatsatire!