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So I want to get the square formed by a single point of lat/lons, my plan was to take that point's latitude, divide by 360, and multiply by the circumference of earth. Giving us the distance from the equator.
Now I will take 1/4 the circumference of earth, and subtract by the distance from the equator, giving us the height of triangle T. I can the find the base because I know the initial height, truncated height, and the original base.
Now using the base and height I can use trig to find the minimum and maximum longitude, and the latitude is easy because lets are evenly spaced. Does this sound right?
Let me simplify this question.
How can I find the distance between two points of longitude, at a single point of latitude?