ATAN

Description Returns the arctangent of a number.

Syntax ATAN ( number )

Argument	Description
number	The tangent of the angle.

Remarks The resulting angle is returned in radians, ranging from -PI/2 to PI/2. To convert the resulting radians to degrees, multiply the radians by 180/PI( ).

Examples This function returns 1.29:

ATAN(3.5)

This function returns -1.33:

ATAN(4)

See Also ATAN2, ATANH, PI, TAN