Secant

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The secant function is defined by $$\sec(z)=\dfrac{1}{\cos(z)},$$ where $\cos$ denotes the cosine.

Properties[edit]

Derivative of secant
Relationship between secant, Gudermannian, and cosh
Relationship between cosh, inverse Gudermannian, and sec

See Also[edit]

Arcsec
Sech
Arcsech

References[edit]

Trigonometric functions