- the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the calculations based on them.
Origin of trigonometry
Examples from the Web for trigonometry
It signifies an enormous number of things, from pot-hooks to trigonometry.The Curse of Education
Harold E. Gorst
This is not because the details of trigonometry are all needed in physics.College Teaching
I worked off a year's trigonometry that summer, and began Virgil alone.My Antonia
They found them deficient in trigonometry and canned them off the team.At Good Old Siwash
I never saw him but during a fortnight, when I took it into my head to do trigonometry.Rowlandson's Oxford
A. Hamilton Gibbs
- the branch of mathematics concerned with the properties of trigonometric functions and their application to the determination of the angles and sides of triangles. Used in surveying, navigation, etcAbbreviation: trig
Word Origin and History for 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)).
- The study of the properties and uses of trigonometric functions.