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Cosine Theorem na ya na-egosi

Onye ọ bụla n'ime anyị bụ a ọtụtụ awa na ngwọta nke a nsogbu nke jiometrị. N'ezie, ajụjụ na-ebilite, gịnịkwa mere i kwesịrị ịmụta ná mgbakọ na mwepụ? The nke bụ karịsịa mkpa maka jiometrị, ebe ihe ọmụma na-kemfe ma ọ bụrụ na, ọ bụ nnọọ obere. Ma mathematicians nwere otu oge atọrọ ma ndị na-agaghị na-aghọ onye na-arụ nke kpọmkwem sayensị. Ọ na-akpata a onye na-arụ ọrụ na ịzụlite.

The nzube mbụ nke mgbakọ na mwepụ e arịọrọ ahụ ụmụ akwụkwọ ihe ọmụma banyere isiokwu ahụ. Teachers Aims na-akụziri ụmụaka na-eche echiche, na-ele ihe, nyochaa ma na-arụ ụka. Nke a bụ ihe anyị na-ahụ na jiometrị, ya ọtụtụ axioms na theorems, corollaries, na ihe-àmà.

The Theorem nke cosines

Yana trigonometric ọrụ ma na algebra inequalities na-amalite na-inyocha nkuku nke ha bara uru na Inweta. Cosine Theorem bụ otu n'ime ndị mbụ usoro, nke ejikọ ịghọta abụọ nwa akwụkwọ mgbakọ na mwepụ na sayensị.

Iji chọta n'aka na ndị ọzọ na abụọ na n'akuku n'etiti etinyere cosine Theorem. N'ihi na a triangle na a nri n'akuku na anyị ga-agakwuru ndị Pythagorean Theorem, ma ọ bụrụ na anyị na-ekwu banyere ihe aka ike na ọnụ ọgụgụ, ọ na-etinyere nwere ike ịbụ.

Cosine Theorem dị ka ndị a:

AC 2 = AB 2 + BC 2 - 2 * AB * BC * cos

Otu akụkụ nke square bụ hà nchikota nke abụọ ndị nke ọzọ n'akụkụ, e ke square, mwepu ha ngwaahịa na-uba site abụọ na cosine nke n'akuku kpụrụ ha.

Ọ bụrụ na ị na-ele ihe anya, nke a usoro bụ reminiscent nke Pythagorean Theorem. N'ezie, ọ bụrụ na anyị na n'akuku n'etiti ụkwụ nke 90, na uru nke ya cosine bụ 0. Dị ka a N'ihi ya, ga-enwe nanị nchikota nke n'ámá nke n'akụkụ, nke a na-ekere ke Pythagorean Theorem.

Cosine Theorem: Gosiri

Site na nke a okwu anyị na-aghọta nke usoro AC 2 ma na-:

AC 2 = BC 2 + AB 2 - 2 * AB * BC * cos

N'ihi ya, anyị na-ahụ na okwu ahụ kwekọrọ na n'elu usoro, a Agba eziokwu dị na ya. Anyị nwere ike ikwu na cosine Theorem gosipụtara. Ọ na-eji niile iche iche nke triangles.

na ojiji nke

Na mgbakwunye na ihe na mgbakọ na mwepụ na physics, a Theorem na ọtụtụ-eji ije na ewu, gbakọọ dị mkpa n'akụkụ na angles. Na ya enyemaka chọpụta chọrọ size na ọnụ ọgụgụ nke ihe ndị na-ewu na-achọrọ maka ya ewu. N'ezie, ọtụtụ ndị Filiks na mbụ chọrọ kpọmkwem mmadụ aka na ihe ọmụma na-akpaghị aka taa. E nwere ọtụtụ ihe omume ndị na-ekwe ka ị na-agbalị ịdị otú ahụ oru ngo na kọmputa. Ha mmemme na-na-rụrụ na niile mgbakọ na mwepụ iwu, Njirimara na formulas.

D

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