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Longman Dictionary of Contemporary English
trigonometry
noun
EXAMPLES FROM CORPUS
▪ An early form of analogue computer, the astrolabe was primarily designed to solve problems of spherical trigonometry to shorten astronomical calculations.
▪ By itself, it is easy to interpret this ability as some sort of mindless, automatic exercise in trigonometry.
▪ He hoped to be an engineer, and he was taking algebra and trigonometry and falling behind in both.
▪ I can see how physics, algebra, trigonometry relate to the machine shop.
▪ I had a very strong background in physics, chemistry, trigonometry and geometry.
▪ I have seen people here who never took trigonometry in high schools' he said with something like awe.
The Collaborative International Dictionary
Trigonometry

Mathematics \Math`e*mat"ics\, n. [F. math['e]matiques, pl., L. mathematica, sing., Gr. ? (sc. ?) science. See Mathematic, and -ics.] That science, or class of sciences, which treats of the exact relations existing between quantities or magnitudes, and of the methods by which, in accordance with these relations, quantities sought are deducible from other quantities known or supposed; the science of spatial and quantitative relations. Note: Mathematics embraces three departments, namely:

  1. Arithmetic.

  2. Geometry, including Trigonometry and Conic Sections.

  3. Analysis, in which letters are used, including Algebra, Analytical Geometry, and Calculus. Each of these divisions is divided into pure or abstract, which considers magnitude or quantity abstractly, without relation to matter; and mixed or applied, which treats of magnitude as subsisting in material bodies, and is consequently interwoven with physical considerations.

Trigonometry

Trigonometry \Trig`o*nom"e*try\, n.; pl. -tries. [Gr. ? a triangle + -metry: cf. F. trigonom['e]trie. 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.

Douglas Harper's Etymology Dictionary
trigonometry

"branch of mathematics that deals with relations between sides and angles of triangles," 1610s, from Modern Latin trigonometria (Barthelemi Pitiscus, 1595), from Greek trigonon "triangle" (from tri- "three," see tri-, + gonia "angle," see knee (n.)) + metron "a measure" (see meter (n.2)).

Wiktionary
trigonometry

n. (context mathematics English) 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.

WordNet
trigonometry

n. the mathematics of triangles and trigonometric functions [syn: trig]

Wikipedia
Trigonometry (album)

Trigonometry is the second album by Saafir, under the alias Mr. No No. It was released on January 20, 1998, on Wrap Records and featured production from Saafir and Shock G.

Trigonometry

Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships involving lengths and angles of triangles. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies.

The 3rd-century astronomers first noted that the lengths of the sides of a right-angle triangle and the angles between those sides have fixed relationships: that is, if at least the length of one side and the value of one angle is known, then all other angles and lengths can be determined algorithmically. These calculations soon came to be defined as the trigonometric functions and today are pervasive in both pure and applied mathematics: fundamental methods of analysis such as the Fourier transform, for example, or the wave equation, use trigonometric functions to understand cyclical phenomena across many applications in fields as diverse as physics, mechanical and electrical engineering, music and acoustics, astronomy, ecology, and biology. Trigonometry is also the foundation of surveying.

Trigonometry is most simply associated with planar right-angle triangles (each of which is a two-dimensional triangle with one angle equal to 90 degrees). The applicability to non-right-angle triangles exists, but, since any non-right-angle triangle (on a flat plane) can be bisected to create two right-angle triangles, most problems can be reduced to calculations on right-angle triangles. Thus the majority of applications relate to right-angle triangles. One exception to this is spherical trigonometry, the study of triangles on spheres, surfaces of constant positive curvature, in elliptic geometry (a fundamental part of astronomy and navigation). Trigonometry on surfaces of negative curvature is part of hyperbolic geometry.

Trigonometry basics are often taught in schools, either as a separate course or as a part of a precalculus course.

Usage examples of "trigonometry".

Further, the shape given to the Antarctic Continent suggests the possibility, if not the probability, that the original source maps were compiled on a stereographic or gnomonic type of projection involving the use of spherical trigonometry.

With the Compasses and Scale, we can trace all the figures used in the mathematics of planes, or in what are called GEOMETRY and TRIGONOMETRY, two words that are themselves deficient in meaning.

Norms and mods never hung out together, but my friends and I were different despite the fact that I worked on trigonometry and the orbit of a gas giant circling Vega while they struggled with x 20 .

I, with my smug superiority and my cheap little bag of tricks like spherical trigonometry and azimuths and sun lines and hour angles and bearings from fixed points, having the effrontery to say a man was crazy because he thought he could go back and find something he'd lost in an ocean.

The young gentlemen had been introduced to the first aorist, the ablative absolute, and the elements of spherical trigonometry.

You have to pass a test, then they give you algebra through quadratics, plane and spherical trigonometry, plane and solid geometry, and plane and solid analytical geometry all in one course, stirred in together.

In this light I view the conic sections, curves of the higher orders, perhaps even spherical trigonometry, algebraical operations beyond the 2d dimension, and fluxions.

She was just starting to recover from the initial onslaught, when she made the rather serious mistake of trying to shake Tricia off by talking smoothly about diurnal arcs, right ascensions and some of the more abstruse areas of three-dimensional trigonometry.

Whatever the reason, Joseph and Maude moved without servants to a dairy ranch, where the winner of the trigonometry and elocution prizes scrubbed laundry on a washboard, killed mice by smashing them with a coal shovel, and rose before dawn to bake bread for a kitchenful of ranch hands wearing unwashed longjohns.

Navigation, nautical astronomy, and trigonometry he will teach you himself, since we have no schoolmaster on board, as on a man-of-war.

By spherical trigonometry the solutions of celestial triangles on which all navigation was based could be converted to the special conditions of Luna, but it would require tedious calculation, not at all like the precalculated short cuts used by all pilots in the age of aircraft and rocket.

Probably most of you are familiar from your mathematics classes in school with the idea that they teach you in trigonometry that all possible ellipses can be obtained by sectioning a cone and we can build up a picture of a cone by examining thousands and thousands of elliptical sections of that cone and then reasoning backward to the higher-dimensional object which that cone represents.

In spite of his dear friend Queenie’s patient explanations of tangents, secants and sines, he had never had a really firm grasp of the principles of spherical trigonometry.

In spite of his dear friend Queenie's patient explanations of tangents, secants and sines, he had never had a really firm grasp of the principles of spherical trigonometry.

Shelf after groaning shelf held dry texts solemnly devoted to algebra, geometry, trigonometry, physics, geology, biology, physiology, astronomy, genetics, chemistry, biochemistry, electronics, agriculture, animal husbandry, soil conservation, engineering, metallurgy, the principles of architecture.