### Definition of Trigonometry

1. Noun. The mathematics of triangles and trigonometric functions.

Exact synonyms: Trig
Category relationships: Math, Mathematics, Maths
Generic synonyms: Pure Mathematics
Specialized synonyms: Spherical Trigonometry, Triangulation
Derivative terms: Trigonometric, Trigonometrician

### Definition of Trigonometry

1. n. That branch of mathematics which treats of the relations of the sides and angles of triangles, which the methods of deducing from certain given parts other required parts, and also of the general relations which exist between the trigonometrical functions of arcs or angles.

### Definition of Trigonometry

1. Noun. (mathematics) The branch of mathematics that deals with the relationships between the sides and the angles of triangles and the calculations based on them, particularly the trigonometric functions. ¹

¹ Source: wiktionary.com

1. [n -TRIES]

### Medical Definition of Trigonometry

1. Origin: Gr. A triangle + -metry: cf. F. Trigonometrie. See Trigon. 1. That branch of mathematics which treats of the relations of the sides and angles of triangles, which the methods of deducing from certain given parts other required parts, and also of the general relations which exist between the trigonometrical functions of arcs or angles. 2. A treatise in this science. Analytical trigonometry, that branch of trigonometry which treats of the relations and properties of the trigonometrical functions. Plane trigonometry, and Spherical trigonometry, those branches of trigonometry in which its principles are applied to plane triangles and spherical triangles respectively. Source: Websters Dictionary (01 Mar 1998)

### Trigonometry Pictures

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### Lexicographical Neighbors of Trigonometry

 trigonidstrigonitetrigonitistrigonocephalictrigonocephalytrigonoceroustrigonometrictrigonometric cofunctiontrigonometric cofunctionstrigonometric function trigonometric seriestrigonometricaltrigonometricallytrigonometriciantrigonometriestrigonometry (current term)trigonoustrigonstrigonumtrigonum acustici trigonum caroticumtrigonum cerebraletrigonum cervicaletrigonum cervicale anteriustrigonum cervicale posteriustrigonum collateraletrigonum collitrigonum deltoideopectoraletrigonum femoraletrigonum fibrosum dextrum

### Literary usage of Trigonometry

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Encyclopedia Americana: A Library of Universal Knowledge (1920)
"Pseudo-spherical trigonometry.— A given sphere has constant positive ... This, too, has its trigonometry. Its formulas are obtainable from those of ..."

2. A History of Greek Mathematics by Thomas Little Heath (1921)
"•There are other cases in Ptolemy in which plane trigonometry is in ett'ect used, eg in the determination of the eccentricity of the sun's orbit.1 Suppose ..."

3. Catalogue of Scientific Papers, 1800-1900: Subject Index by Royal Society (Great Britain), Herbert McLeod (1908)
"(See also 3620, trigonometry 468-469 Spherical Triangles 470-471 6840 ... 455-456 Spheres 457-460 Contacts 458-459 6830 trigonometry, plane and spherical . ..."

4. The Positive Philosophy of Auguste Comte by Auguste Comte, Harriet Martineau (1893)
"Their introduction divides trigonometry into two parts. In one, we pass from the angles ... But for this, the ancients could not have obtained trigonometry. ..."

5. An Introduction to Mathematics by Alfred North Whitehead (1911)
"CHAPTER XIII trigonometry trigonometry did not take its rise from the general ... trigonometry, like conic sections, had its origin among the Greeks. ..."