Tangent

A line that meets a smooth curve at a single point and does not cut across the curve.

Or

A trigonometric function. The trigonometric function of angle A is defined as:



Note: In this series A is in radians and












The following expression is also known as the half angle formula:

See also: Cosecant, Cosine, Cotangent, Secant, Series Expansions, Sine, Tangential, Trigonometric Functions.

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Subjects: Trigonometry