Returns the arc tangent of a number, in radians.

Syntax:

ATAN (number)

Parameters:

number: A number between -1 and 1.

Returns:

Arc Tangent of a number (radians)

Example:

Where x=2 and y=1, ATAN(x-y) returns 0.78539816

See also:

TAN, COS, ACOS, SIN, ASIN

The Online and Rich Client Samples projects (program NM02 and RNM02)