Distance between two locations when their latitude and longitudes are given

[dcardonaa]

Thanks! That helped.. but then I found another error..

Error:
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-68-f294b8d435f6> in <module>
     47         return (phimedium,'Distance between point 1 and 2 is:', Distance, 'km')
     48 
---> 49 d=Distance_Geogr_Points()
     50 d.Ellip_earth_proj_plane(deltaphi, deltalambda, phimedium, K1, K2)

<ipython-input-68-f294b8d435f6> in __init__(self)
      9         self.point1=point1
     10         self.point2=point2
---> 11         self.deltaphi=deltaphi
     12         self.deltalambda=deltalambda
     13         self.phimedium=phimedium

NameError: name 'deltaphi' is not defined