trigonometry - Wiktionary, the free dictionary
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From 1610s, from New Latin trigōnometria, from Ancient Greek τρίγωνον (trígōnon, “triangle”) + μέτρον (métron, “measure”),[1] equivalent to trigono- + -metry.
trigonometry (countable and uncountable, plural trigonometries)
- (geometry, mathematical analysis) The branch of mathematics that deals with the relationships between the sides and angles of (in particular) right-angled triangles, as represented by the trigonometric functions, and with calculations based on said relationships.
Trigonometry emerged in the Hellenistic world during the 3rd century BCE from applications of geometry to astronomy; the Greeks focused on the calculation of chords, while mathematicians in India created the earliest known tables of values for trigonometric functions such as sine.
1892, Edward Albert Bowser, A Treatise on Plane and Spherical Trigonometry, D. C. Heath & Co., page 1:
Trigonometry was originally the science which treated only of the sides and angles of plane and spherical triangles; but it has been recently extended so as to include the analytic treatment of all theorems involving the consideration of angular magnitudes.
2013, Paul Abbott, Hugh Neill, Trigonometry: A Complete Introduction, Hachette, unnumbered page:
In fact, the earliest practical uses of trigonometry were in the fields of astronomy and hence navigation.
2016, Carl F. Lorenzo, Tom T. Hartley, The Fractional Trigonometry, Wiley, page 8:
The properties of these new trigonometries and identities flowing from the definitions are then developed.
The trigonometries derived from these generalizations will be jointly termed "The Fractional Trigonometry."
- (branch of mathematics): trig (informal, abbreviation)
branch of mathematics
- Albanian: trigonometria
- Arabic: عِلْم اَلْمُثَلَثَات m (ʕilm al-muṯalaṯāt), عِلْم حِسَاب اَلْمُثَلَثَات m (ʕilm ḥisāb al-muṯalaṯāt), حِسَاب اَلْمُثَلَثَات m (ḥisāb al-muṯalaṯāt)
- Armenian: եռանկյունաչափություն (hy) (eṙankyunačʻapʻutʻyun)
- Assyrian Neo-Aramaic: ܡܡܲܠܠܘܼܬ ܡܬܲܠܬܹ̈ܐ f (mmallūt mtaltē)
- Azerbaijani: triqonometriya
- Basque: trigonometria (eu)
- Belarusian: трыганаметрыя (tryhanamjetryja)
- Bengali: ত্রিকোণমিতি (bn) (trikōnmiti)
- Bulgarian: тригономе́трия (bg) f (trigonométrija)
- Burmese: တြီဂိုနိုမေတြီ (triguinuime-tri)
- Catalan: trigonometria f
- Chinese:
- Czech: trigonometrie (cs) f
- Danish: trigonometri c
- Dutch: trigonometrie (nl) f, goniometrie (nl) f, driehoeksmeetkunde f
- Esperanto: trigonometrio
- Estonian: trigonomeetria
- Farefare: kɔkatãmakrʋm, tãkɔkamakrʋm
- Finnish: trigonometria (fi)
- French: trigonométrie (fr) f
- Galician: trigonometría (gl) f
- Georgian: ტრიგონომეტრია (ṭrigonomeṭria)
- German: Trigonometrie (de) f
- Greek: τριγωνομετρία (el) (trigonometría)
- Hebrew: טְרִיגוֹנוֹמֶטְרִיָּה (he) f (trigonometriya)
- Hindi: त्रिकोणमिति (hi) f (trikoṇmiti)
- Hungarian: trigonometria (hu)
- Icelandic: hornafræði f
- Indonesian: trigonometri (id)
- Irish: triantánacht
- Italian: trigonometria (it) f
- Japanese: 三角法 (ja) (さんかくほう, sankakuhō)
- Kazakh: тригонометрия (trigonometriä)
- Khmer: ត្រីកោណមាត្រ (km) (trəykaonmiətrɔɔ)
- Korean: 삼각법(三角法) (ko) (samgakbeop)
- Kurdish:
- Central Kurdish: سێگۆشەزانی (sêgoşezanî)
- Northern Kurdish: sêgoşenasî, sêgoşezanî, trîgonometrî
- Latin: trigonometria f
- Latvian: trigonometrija f
- Lithuanian: trigonometrija f
- Macedonian: тригономе́трија f (trigonométrija)
- Mongolian:
- Cyrillic: тригономэтр (trigonometr), гуравалжлэлийн арга (guravalžleliin arga) (China)
- Mongolian: ᠲᠷᠢᠭᠣᠨᠣᠮᠧᠲ᠋ᠷᠢ (triɣonomētri), ᠭᠤᠷᠪᠠᠯᠵᠢᠯᠡᠯ ᠦᠨ
ᠠᠷᠭᠠ (ɣurbalǰilel-ün arg-a)
- Norwegian:
- Bokmål: trigonometri (no) m
- Occitan: trigonometria (oc) f
- Persian: مثلثات (fa) (mosalasât)
- Polish: trygonometria (pl) f
- Portuguese: trigonometria (pt) f
- Romanian: trigonometrie (ro) f
- Russian: тригономе́трия (ru) f (trigonométrija)
- Sindhi: ٽِڪُنڊپيمائِش (sd) f
- Slovak: trigonometria f
- Spanish: trigonometría (es) f
- Swedish: trigonometri (sv) c
- Tagalog: tatsihaan
- Tamil: முக்கோணவியல் (ta) (mukkōṇaviyal), திரிகோணமிதி (tirikōṇamiti)
- Telugu: త్రికోణమితి (te) (trikōṇamiti)
- Thai: ตรีโกณมิติ (th) (dtrii-goon-mí-dtì)
- Turkish: trigonometri (tr)
- Turkmen: trigonometriýa
- Ukrainian: тригономе́трія f (tryhonométrija)
- Uzbek: trigonometriya (uz)
- Vietnamese: lượng giác học
- Welsh: trigonometreg
- Yiddish: טריגאָנאָמעטריע (trigonometrye)
- ^ Douglas Harper (2001–2024) “trigonometry”, in Online Etymology Dictionary.
- Trigonometric functions on Wikipedia.Wikipedia
- Trigonometric tables on Wikipedia.Wikipedia
- Pythagorean trigonometric identity on Wikipedia.Wikipedia
- List of trigonometric identities on Wikipedia.Wikipedia