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The branch of trigonometry concerned with the measurement of the angles and sides of spherical triangles.
‘Nunes worked in geometry and spherical trigonometry publishing Treatise on the Sphere.’
‘In particular Caroline studied spherical trigonometry which would be important for reducing astronomical observations.’
‘He also gave his name to a theorem in spherical trigonometry, and his criticisms of Ptolemy's Almagest are well known.’
‘It consists of 5 books on plane and spherical trigonometry.’
‘Book 3 deals with spherical trigonometry and includes Menelaus' theorem.’
‘This contained work on planar and spherical trigonometry originally done much earlier in about 1464.’
‘Hall apparently is ignorant of spherical trigonometry where the sum of the interior angles of every triangle exceeds 180 degrees.’
‘The calculation of the direction of Mecca, as a function of terrestrial latitude and longitude, was one of the hardest of all problems of spherical trigonometry for which Islam required a solution.’
‘We should now look at the rather remarkable work which Guo did on spherical trigonometry and solving equations.’
‘These cover topics such as spherical geometry and spherical trigonometry.’
‘His work on spherical trigonometry led him to this system.’
‘He therefore added a preface of his own on applications of logarithms to both plane trigonometry and to spherical trigonometry.’
‘Her distinguished teaching career, during which time she published two excellent texts, one on plane geometry and the other on spherical trigonometry, came to a premature end in 1950.’
‘He made important advances in spherical trigonometry and developed the system of astrological house division that bears his name.’
‘He gave the first extant exposition of the whole system of plane and spherical trigonometry.’
‘Its sophisticated treatment of spherical trigonometry allowed cartographers to construct terrestrial globes and map projections that took into account the curvature of the earth's surface.’
‘In mathematics Werner worked on spherical trigonometry and conic sections.’
‘While he was working there, he published a number of textbooks on spherical trigonometry, geography and astronomy.’
‘He wrote on astronomy, spherical trigonometry, sundials and mathematical instruments.’
‘The mathematical part of the book covers arithmetic, algebra, plane trigonometry and spherical trigonometry.’