Using Haversine formula

See my blueprint:

- Your formula is wrong, your functions require radians (Multiply by PI and divide by 180 => DLat, DLong, LatHome for COS and LatDest for COS).
- Those coordinates are more than 1km apart. More like 70-100km.
- You’ll get kilometers when using R=6371 or meters when using R=6371000