Definition:Hyperbolic Cosecant/Real

Also see

 * Equivalence of Definitions of Real Hyperbolic Cosecant


 * Definition:Real Hyperbolic Sine
 * Definition:Real Hyperbolic Cosine
 * Definition:Real Hyperbolic Tangent
 * Definition:Real Hyperbolic Cotangent
 * Definition:Real Hyperbolic Secant