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Secant is a term in mathematics derived from the
Latin Latin (, or , ) is a classical language A classical language is a language A language is a structured system of communication Communication (from Latin ''communicare'', meaning "to share" or "to be in relation with") is "an appa ...

Latin
''secare'' ("to cut"). It may refer to: * a
secant line In geometry Geometry (from the grc, γεωμετρία; ' "earth", ' "measurement") is, with , one of the oldest branches of . It is concerned with properties of space that are related with distance, shape, size, and relative position of ...
, in geometry * the secant variety, in algebraic geometry *
secant (trigonometry) In mathematics Mathematics (from Ancient Greek, Greek: ) includes the study of such topics as quantity (number theory), mathematical structure, structure (algebra), space (geometry), and calculus, change (mathematical analysis, analysis). I ...
(Latin: secans), the multiplicative inverse (or reciprocal) trigonometric function of the cosine * the
secant method In numerical analysis, the secant method is a root-finding algorithm that uses a succession of Root of a function, roots of secant lines to better approximate a root of a Function (mathematics), function ''f''. The secant method can be thought o ...

secant method
, a root-finding algorithm in numerical analysis, based on secant lines to graphs of functions * a
secant ogive Given the problem of the aerodynamic study at Wallops Flight Facility, Wallops Island in 1990. A vortex is created by passage of an aircraft wing, revealed by smoke. Vortices are one of the many phenomena associated with the study of aerodynam ...

secant ogive
in nose cone design {{mathdab sr:Секанс