Bounding Location fails for the given set

[ronagrawal]

Can you please help me understand,
Why the following is failing?

Coordinates A : (-36.8667deg, 174.7667deg) = (-0.643445rad, 3.050254rad)
Coordinates B : (-36.8404deg, 174.7399deg) = (-0.642987rad, 3.049786rad)

Range in Km 450
Bounding Location from A
Min Lat, Min Lon : (-40.9091deg, 169.7115deg) = (-0.713999rad, 2.962024rad)
Max Lat, Max Lon : (-32.8242deg, 179.8219deg) = (-0.572891rad, 3.138484rad)
Coordinates A & Coordinates B are in range

Range in Km 500
Bounding Location from A
Min Lat, Min Lon : (-41.3583deg, 169.1492deg) = (-0.721838rad, 2.952210rad)
Max Lat, Max Lon : (-32.3751deg, -179.6158deg) = (-0.565052rad, -3.134887rad)
Coordinates A & Coordinates B are not in range