Atn

Return the inverse (or arc) tangent of an integer or real number. The inverse tangent of x is the angle in radians whose tangent is equal to x.

Syntax

Atn(x)

Arguments

• x

  Must be an integer or real number

Returns

The inverse tangent of x, in radians

Exceptions

Returns an error if x is not an integer or real number

Example

• Atn(1)

  [Returns 0.7854]

• Atn(-2.2)

  [Returns -1.1442]

• Atn('att1')

  [Return the inverse tangent of the value of 'att1' at trigger time]

• Atn('att1' - 'att2')

  [Return the inverse tangent of the difference of 'att1' and 'att2' at trigger time]