spherical trigonometry

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noun

the branch of trigonometry that deals with spherical triangles.

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Origin of spherical trigonometry

First recorded in 1720–30

Words nearby spherical trigonometry

spherical excess, spherical geometry, spherical polygon, spherical sailing, spherical triangle, spherical trigonometry, sphericity, spherics, sphero-, spheroid, spheroidal

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use spherical trigonometry in a sentence

He invented the sciences of plane and spherical trigonometry, and was the first to use right ascensions and declinations.
The Astronomy of Milton's 'Paradise Lost'|Thomas Orchard
By this time I had studied plane and spherical trigonometry, conic sections, and Fergusson's "Astronomy."
Personal Recollections, from Early Life to Old Age, of Mary Somerville|Mary Somerville
It would be well to have such means at hand in teaching spherical trigonometry.
Outlines of Educational Doctrine|John Frederick Herbart
Musa, above mentioned, was the author of a "Treatise on Spherical Trigonometry."
History of the Conflict Between Religion and Science|John William Draper

As early as 1000 spherical trigonometry was in use, and Aboul-Hassan wrote an excellent treatise on conic sections.
The Law of Civilization and Decay|Brooks Adams

British Dictionary definitions for spherical trigonometry

spherical trigonometry

noun

the branch of trigonometry concerned with the measurement of the angles and sides of spherical triangles

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012