compass degrees angle prediction question

[aseminov]

Hello,

In a cartesian coordinate system, I want to be able to predict a compass angle of an object. So I have a base position of (0,0) and then a
distance and compass angle to an object. This object also has a heading and a speed. How can I predict the new compass angle of the object with that
information?

my coordinate system is like this:


0 y | | 270-------------- 90 x | | 180

I think the first step
would be to compute the cartesian coordinates of the object:

angle gets converted to radians
x = distance * sin(radians);
y = distance * cos(radians);

then the next step would be to compute the predicted x and y from the speed and heading of the object:

predictedx = ??
predictedy = ??

then finally convert
back to an angle, and distance:

newDistance = sqrt(predictedx^2 + predictedy^2);
newAngle = atan2(predictedy, predictedx);

Can anyone help me fill in the blanks?? Are my other things correct?

Thanks!
Alex