TOPICS
Circular Functions
The functions describing the horizontal and vertical positions of a point on a circle as a function of angle (cosine and sine) and those functions derived from them:
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(1)
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(3)
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(4)
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(5)
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Circular functions are also called trigonometric functions, and the study of circular functions is called trigonometry.
See also
Cosecant, Cosine, Cotangent, Elliptic Function, Generalized Hyperbolic Functions, Hyperbolic Functions, Secant, Sine, Tangent, Trigonometric Functions, TrigonometryExplore with Wolfram|Alpha
References
Abramowitz, M. and Stegun, I. A. (Eds.). "Circular Functions." §4.3 in Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, pp. 71-79, 1972.Referenced on Wolfram|Alpha
Circular FunctionsCite this as:
Weisstein, Eric W. "Circular Functions." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/CircularFunctions.html