I think that this is almost right, but not quite. c/360 gives the distance north-south per degree, whereas what we actually want is degrees per unit distance NS, ie 360/c. Similarly for the distance EW. We want the final result to have dimensions of an angle but the equations that you give have inconsistent dimensions (angle + distance^2/angle).

The two equations should be:

The mean radius of the earth is 6371 km (NASA), so c = 40030 km.

In reply to Re: Re: How do I compute the longitude and latitude of a point at a certain distance? by Bilbo
in thread How do I compute the longitude and latitude of a point at a certain distance? by themaetrix

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