After spending a lot of time with my friend Google, I have come to the 
conclusion that documentation on how to calculate the rotation parameters of a 
world file is very hard to find.  

I have an image that I would like to georeference and rotate using a world 
file.  If I want to rotate the image 43 degrees counter-clockwise, how do I go 
about calculating the rotation parameters in the world file?  

Here are the params that I have already determined

0.177959962     pixel size x direction
                rotation x term
                rotation y term
0.177941345     pixel size y direction
583930.6469     ul xcoord
4895626.67      ul ycoord

Thanks, 

David.

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