The 'hyperbolic cosine' of a sphere [Le 'cosinus hyperbolique' d'une sphère].
O --> O' = cosh(O)
exponential |
cosine |
sine |
tangent |
hyperbolic cosine |
hyperbolic sine |
hyperbolic tangent |
exponential |
cosine |
sine |
tangent |
hyperbolic cosine |
hyperbolic sine |
hyperbolic tangent |