Hyperbolic Functions
• sinh(z), cosh(z), tanh(z), csch(z), sech(z), coth(z)—Return the hyperbolic sine, cosine, tangent, cosecant, secant, and cotangent of z respectively.
Hyperbolic functions are sensitive to roundoff errors when the argument is very large or when there is a singularity. Both cosh and sinh become unbounded when the argument approaches to ±∞.
The hyperbolic functions are related to the trigonometric functions.
Arguments
• z is a dimensionless scalar in radians, or a vector of scalars.