ARCTAN2

The ARCTAN2 function returns a full-range (0 - 2 pi) numeric value indicating the arc tangent of a given ratio. The function returns values in the range of -pi to pi, depending on the signs of the arguments. The values are expressed in radians.

To calculate the angle value (in radians) of a specified tangent that is not a ratio, use ARCTAN.

Return Value

NUMBER

Syntax

ARCTAN2 (n / m)

Arguments

n

A numeric expression that specifies one component of the ratio. The argument n can be in an unbounded range.

m

A numeric expression that specifies the other component of the ratio.

Examples

The following example returns the arc tangent of.3 and.2.

SHOW ARCTAN2(.3/.2) 

.982793723