Calculating dd.mm.ss

[Arlie]

I need some guidance with the following task.

I have a vertical aerial photograph that is 9" X 9" square. I have the coordinate of the center of the image, and the heading, and I know the scale of the imagery. What I need to do is calculate what the coordinate is of each corner of the photo in degrees, minutes, and seconds.
The coordinate of the center is

Any help would be much appreciated.
Arlie

[Arlie]

Sorry, I did not complete the last sentence.
The coordinate of the center is 39-27-30N 077-58-15W
The heading is 27 degrees
The scale of the photography is 1" = 1000"
The distance on the photograph from the center to one corner is 5.8"

Thanks
Arlie