Atan
Returns the trigonometric arc tangent (Atan), or inverse tangent, of a number.
Format
Atan ( number )
Parameters
number - any numeric expression or field containing a numeric expression
Data type returned
number
Originated in version
6.0 or earlier
Description
The arc tangent is the angle, in radians, whose tangent is equal to the specified number.
Example 1
Atan(1) returns .78539816....
Degrees(Atan(1)) returns 45.