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:

Tools of the Trigonometric Math toolset

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.