Atan Function

Returns the arctangent of the value specified. The arctangent is the angle whose tangent is value.

Syntax

result = Atan( value )


Parameters

value

Double

The value you want the arc tangent of.



Notes

The Atan function returns the angle (in radians) of the number passed to it. To express the arctangent in degrees, multiply the result by 180/PI.


Examples

This example uses the Atan function to return the arc tangent of a number.

Dim d as Double
Const PI=3.14159265358979323846264338327950
d=Atan(1) //returns 0.785398 (PI/4 radians)
d=Atan(1)*180/PI // returns 45

See Also

Atan2, Tan functions.