# An overview of the Trigonometric Math toolset in Image Analyst

Available with Spatial Analyst license.

Available with Image Analyst license.

Trigonometric Math tools perform various trigonometric calculations
on the values in an input raster.

There are several general categories of trigonometric calculations. The available tools in each of the categories are listed here:

- Standard trigonometric tools:
- Cos (cosine), Sin (sine), Tan (tangent).

- Inverse (or "arc") trigonometric tools:
- ACos (inverse cosine), ASin (inverse sine), ATan (inverse tangent).
- There is also an inverse tangent based on x,y, as ATan2.

- Hyperbolic trigonometric tools:
- CosH (hyperbolic cosine), SinH (hyperbolic sine), TanH (hyperbolic tangent ).

- Inverse hyperbolic trigonometric tools:
- ACosH (inverse hyperbolic cosine), ASinH (inverse hyperbolic sine), ATanH (inverse hyperbolic tangent).

The following table lists the available Trigonometric Math tools and provides a brief description of each:

Tool | Description |

ACos | Calculates the inverse cosine of cells in a raster. |

ACosH | Calculates the inverse hyperbolic cosine of cells in a raster. |

ASin | Calculates the inverse sine of cells in a raster. |

ASinH | Calculates the inverse hyperbolic sine of cells in a raster. |

ATan | Calculates the inverse tangent of cells in a raster. |

ATan2 | Calculates the inverse tangent (based on x,y) of cells in a raster. |

ATanH
| Calculates the inverse hyperbolic tangent of cells in a raster. |

Cos | Calculates the cosine of cells in a raster. |

CosH | Calculates the hyperbolic cosine of cells in a raster. |

Sin | Calculates the sine of cells in a raster. |

SinH | Calculates the hyperbolic sine of cells in a raster. |

Tan | Calculates the tangent of cells in a raster. |

TanH
| Calculates the hyperbolic tangent of cells in a raster. |

Tools of the Trigonometric Math toolset

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