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Possible Duplicate:
Calculating Lat/Lng X miles from point

I would like to know how could I translate a geographical coordinate to an specific distance. So for example let's suppose I'm facing North at (-78.4437,-0.31399). I need to know the coordinate that's 100m farther and has +30 degrees offset from North. Thanks a lot.

merged by whuber Jul 21 '12 at 17:09

This question was merged with Calculating Latitude/Longitude X miles from point? because it is an exact duplicate of that question.