content/flux/v0/stdlib/math/atan2.md
math.atan2() returns the artangent of x/y, using the signs
of the two to determine the quadrant of the return value.
(x: float, y: float) => float
{{% caption %}} For more information, see Function type signatures. {{% /caption %}}
({{< req >}}) y-coordinate to use in the operation.
({{< req >}}) x-coordinate to use in the operation.