Difference between revisions of "Trigonometry"
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Revision as of 06:42, 26 April 2016
Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships involving lengths and angles of triangles.
History
The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies.
See also
- Aryabhata's sine table
- Generalized trigonometry
- Geometry
- Lénárt sphere
- List of triangle topics
- List of trigonometric identities
- Mathematics
- Rational trigonometry
- Skinny triangle
- Small-angle approximation
- Trigonometric functions
- Trigonometry in Galois fields
- Unit circle
- Uses of trigonometry
External links
- Trigonometry @ Wikipedia
