# hyperbolic trigonometry

Hyperbolic Trigonometry

A variation of trigonometry. Hyperbolic trig functions are defined using ex and e–x. The six hyperbolic trig functions relate to each other in ways that are similar to conventional trig functions. Hyperbolic trig plays an important role when trig functions have imaginary or complex arguments.

Note: Hyperbolic trigonometry has no relation whatsoever to hyperbolic geometry.