Spherical 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. [1913 Webster]

2. A treatise in this science. [1913 Webster]

{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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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• Spherical trigonometry — Spherical triangle Spherical trigonometry is a branch of spherical geometry which deals with polygons (especially triangles) on the sphere and the relationships between the sides and the angles. This is of great importance for calculations in… …   Wikipedia

• Spherical trigonometry — Spherical Spher ic*al, Spheric Spher ic, a. [L. sphaericus, Gr. ???: cf. F. sph[ e]rique.] 1. Having the form of a sphere; like a sphere; globular; orbicular; as, a spherical body. [1913 Webster] 2. Of or pertaining to a sphere. [1913 Webster] 3 …   The Collaborative International Dictionary of English

• spherical trigonometry — n. the application of trigonometry to spherical triangles …   English World dictionary

• spherical trigonometry — noun (mathematics) the trigonometry of spherical triangles • Topics: ↑mathematics, ↑math, ↑maths • Hypernyms: ↑trigonometry, ↑trig …   Useful english dictionary

• spherical trigonometry — noun Date: circa 1728 trigonometry applied to spherical triangles and polygons …   New Collegiate Dictionary

• spherical trigonometry — the branch of trigonometry that deals with spherical triangles. [1720 30] * * * …   Universalium

• spherical trigonometry — spher′ical trigonom′etry n. math. the branch of trigonometry that deals with spherical triangles • Etymology: 1720–30 …   From formal English to slang

• Spherical geometry — is the geometry of the two dimensional surface of a sphere. It is an example of a non Euclidean geometry. Two practical applications of the principles of spherical geometry are navigation and astronomy.In plane geometry the basic concepts are… …   Wikipedia

• Spherical — Spher ic*al, Spheric Spher ic, a. [L. sphaericus, Gr. ???: cf. F. sph[ e]rique.] 1. Having the form of a sphere; like a sphere; globular; orbicular; as, a spherical body. [1913 Webster] 2. Of or pertaining to a sphere. [1913 Webster] 3. Of or… …   The Collaborative International Dictionary of English

• Spherical angle — Spherical Spher ic*al, Spheric Spher ic, a. [L. sphaericus, Gr. ???: cf. F. sph[ e]rique.] 1. Having the form of a sphere; like a sphere; globular; orbicular; as, a spherical body. [1913 Webster] 2. Of or pertaining to a sphere. [1913 Webster] 3 …   The Collaborative International Dictionary of English