Haversine formula
You are encouraged to solve this task according to the task description, using any language you may know.
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The haversine formula is an equation important in navigation, giving great-circle distances between two points on a sphere from their longitudes and latitudes. It is a special case of a more general formula in spherical trigonometry, the law of haversines, relating the sides and angles of spherical "triangles".
Task : Implements a Haversine distance function, or uses a library function, to show the Haversine distance between Nashville International Airport (BNA) in Nashville, TN, USA: N 36°7.2', W 86°40.2' (36.12, -86.67) and Los Angeles International Airport (LAX) in Los Angeles, CA, USA: N 33°56.4', W 118°24.0' (33.94, -118.40).
Groovy
<lang Groovy> def haversine(lat1, lon1, lat2, lon2) {
def rads = Math.PI / 180 def R = 6372.8 // In kilometers def dLat = (lat2 - lat1) * rads def dLon = (lon2 - lon1) * rads lat1 = lat1 * rads lat2 = lat2 * rads
def a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.sin(dLon / 2) * Math.sin(dLon / 2) * Math.cos(lat1) * Math.cos(lat2) def c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)) R * c
}
haversine(36.12, -86.67, 33.94, -118.40)
> 2887.25995060711 </lang>