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Flash Player 5. In Flash Player 4, the methods and properties of the Math class are emulated using approximations and may not be as accurate as the non-emulated math functions supported by Flash Player 5.
Math.atan2(y, x)
x A number specifying the x coordinate of the point.
y A number specifying the y coordinate of the point.
A number.
Method; computes and returns the arc tangent of y/x in radians. The return value represents the angle opposite the opposite angle of a right triangle, where x is the adjacent side length and y is the opposite side length.
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