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Haskell reference |

Intro / Search / ZVON |

| Indexes | Syntax | >> Prelude << | Ratio | Complex | Numeric | Ix | Array | List | Maybe | Char | Monad | IO | Directory | System | Time | Locale | CPUTime | Random |

Module: | Prelude |
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Function: | acosh |

Type: | Floating a => a -> a |

Class: | Floating |

Description: | inverse hyperbolic cosine |

Related: | acos, asin, asinh, atan, atanh, cos, cosh, sin, sinh, tan, tanh |

Keywords: | cosine hyperbolic inverse, trigonometry |

MATHWORLD | Inverse Hyperbolic Cosine |

Example 1

**Input: **acosh 1

**Output: **0.0