hyperbolic cosine
noun1
Mathematics, Sciences A hyperbolic function that is the analogue of the cosine function for hyperbolic spaces, taking in a hyperbolic angle as an argument and returning the y-coordinate for the corresponding point on the unit hyperbola, symbolically represented as
- cosh (x)= tfrac 1 2(eˣ+e⁻ˣ).
- Related terms
- hyperbolic sine, hyperbolic tangent