ATan (arctangent)

ATan Function

Calculates the arctangent, that is, the angle whose tangent is the number that is input as the argument. The arctangent is also known as the inverse tangent of a number. The function returns the arctangent angle in radians in the range -pi/2 to pi/2.

Syntax

ATan(scalar Number)

Arguments

Argument	Description
scalar Number	Number for which the arctangent is to be calculated

Examples:

ATan(1.57079633)

Returns the value in radians of Arc tangent of pi/2.