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);