Name
Atan2 Function
Class
System.Math
Syntax
Math.Atan2(y,x)
-
x(required; Double) The x coordinate of a point
-
y(required; Double) The y coordinate of a point
Return Value
A Double that is the arctangent of the ratio x/y, in radians
Description
Returns the angle in the Cartesian plane formed by the x-axis and a
vector starting from the origin (0,0) and terminating at the point
(x, y). More specifically, the return value
q satisfies the following:
For (x, y) in quadrant 1, 0 < q < pi/2.
For (x, y) in quadrant 2, pi /2 < q < pi.
For ( x, y) in quadrant 3, -pi < q < -pi /2.
For ( x, y) in quadrant 4, -pi /2 < q < 0.
Rules at a Glance
This is a Shared member, so it can be used without creating any objects.
VB.NET/VB 6 Differences
The Atan2 function does not exist in VB 6.
See Also
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