How can i get minimum and maximum latitude and longitude using current location and radius?

Question

I want Minimum and Maximum Latitude and Longitude Using Current Location.Suppose i have give the area of 20km so using that latitude and Longitude i want Maximum latitude an

Answer 1

1. macros to convert Degrees to Radians

   define DEGREES_TO_RADIANS(degrees) (degrees / 180.0 * M_PI)

2. macros to raduis in KM

   define radiusInKM 5.00

3. set the minimum and maximum Latitude, Longitude values

   CLLocation *location;//your current location

   1° latitude = 69.047 statute miles = 60 nautical miles = 111.12 kilometers

   double minLat = location.coordinate.latitude - (radiusInKM/111.12);

   double maxLat = location.coordinate.latitude + (radiusInKM/111.12);

   double minLon = location.coordinate.longitude - (radiusInKM) / fabs(cos(DEGREES_TO_RADIANS(location.coordinate.longitude))*111.12);

   double maxLon = location.coordinate.longitude + (radiusInKM) / fabs(cos(DEGREES_TO_RADIANS(location.coordinate.longitude))*111.12);