### Question:
SphericalMercatorProjection { public static double yToLatitude(double y) { return Math.toDegrees(Math.atan(Math.exp(y / EARTH_RADIUS)) * 2 - Math.PI / 2); }  static double yToLatitude(double y); static double xToLongitude(double x); static double latitudeToY(double latitude); static double longitudeToX(double longitude); static Location ecefToLocation(double[] ecef); static double[] ecefToGeodetic(double[] ecef); static double[] locationToEcef(Location location); static double[] geodeticToEcef(double[] geodetic); static final double EARTH_RADIUS; }### Answer:
@Test public void yToLatitude() { double actualLatitude = SphericalMercatorProjection.yToLatitude(6894701.008722784); assertEquals(LocationTest.BERLIN.getLatitude(), actualLatitude, 0.00001); }