Calculate new coordinates with starting position and distance

Question

I am trying to get the coordinates of a point, that is on a set distance from a starting position, but the end result is wrong.

First, I calculate the angle between

Answer 1

Ok, after some more digging, I found this answer, which resolves my problem. Here is my complete solution in swift:

internal func moveToLocation(location: CLLocationCoordinate2D, distance: Double) {
    let angle = self.calculateAngleBetweenLocations(self.currentLocation, targetLocation: location)
    let newLocation = self.coordinates(self.currentLocation, atDistance: distance, atAngle: angle)

    self.moveUser(newLocation: newLocation) 
}

private func coordinates(startingCoordinates: CLLocationCoordinate2D, atDistance: Double, atAngle: Double) -> CLLocationCoordinate2D {
    let distanceRadians = atDistance / 6371
    let bearingRadians = self.degreesToRadians(atAngle)
    let fromLatRadians = self.degreesToRadians(startingCoordinates.latitude)
    let fromLonRadians = self.degreesToRadians(startingCoordinates.longitude)

    let toLatRadians = asin(sin(fromLatRadians) * cos(distanceRadians) + cos(fromLatRadians) * sin(distanceRadians) * cos(bearingRadians))
    var toLonRadians = fromLonRadians + atan2(sin(bearingRadians) * sin(distanceRadians) * cos(fromLatRadians), cos(distanceRadians) - sin(fromLatRadians) * sin(toLatRadians));

    toLonRadians = fmod((toLonRadians + 3 * M_PI), (2 * M_PI)) - M_PI

    let lat = self.radiansToDegrees(toLatRadians)
    let lon = self.radiansToDegrees(toLonRadians)

    return CLLocationCoordinate2D(latitude: lat, longitude: lon)
}

private func calculateAngleBetweenLocations(currentLocation: CLLocationCoordinate2D, targetLocation: CLLocationCoordinate2D) -> Double {
    let fLat = self.degreesToRadians(currentLocation.latitude);
    let fLng = self.degreesToRadians(currentLocation.longitude);
    let tLat = self.degreesToRadians(targetLocation.latitude);
    let tLng = self.degreesToRadians(targetLocation.longitude);
    let deltaLng = tLng - fLng

    let y = sin(deltaLng) * cos(tLat)
    let x = cos(fLat) * sin(tLat) - sin(fLat) * cos(tLat) * cos(deltaLng)

    let bearing = atan2(y, x)

    return self.radiansToDegrees(bearing)
}

private func degreesToRadians(x: Double) -> Double {
    return M_PI * x / 180.0
}

private func radiansToDegrees(x: Double) -> Double {
    return x * 180.0 / M_PI
}