hyperbolic secant
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Related to hyperbolic secant: Hyperbolic cosecant, Hyperbolic cotangent, Hyperbolic tangent, Hyperbolic trig identities, Hyperbolic trig functions
hyperbolic secant
[¦hī·pər¦bäl·ik ′sē‚kant] (mathematics)
A function whose value is equal to the reciprocal of the value of the hyperbolic cosine. Abbreviated sech.