# Trigonometric Math geoprocessing functions

Available with Spatial Analyst license.

Available with Image Analyst license.

The Trigonometric Math geoprocessing functions perform various trigonometric calculations on the values in an input raster.

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

• Standard trigonometric geoprocessing functions:
• Cos (cosine), Sin (sine), Tan (tangent).
• Inverse (or "arc") trigonometric geoprocessing functions:
• ACos (inverse cosine), ASin (inverse sine), ATan (inverse tangent).
• There is also an inverse tangent based on x,y, as ATan2.
• Hyperbolic trigonometric geoprocessing functions:
• CosH (hyperbolic cosine), SinH (hyperbolic sine), TanH (hyperbolic tangent ).
• Inverse hyperbolic trigonometric geoprocessing functions:
• ACosH (inverse hyperbolic cosine), ASinH (inverse hyperbolic sine), ATanH (inverse hyperbolic tangent).

The following table lists the available geoprocessing functions and provides a brief description of each.

Geoprocessing FunctionDescription

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.

Geoprocessing functions of the Trigonometric Math category