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Angle Between 2 locations

Question asked by pankajesri on Jun 8, 2015
Latest reply on Jun 8, 2015 by sephefox

Hi,

 

While calculating the angle between 2 sets of co-ordinates in UTM, we observed that it differs a lot between the output of ArcGIS and Google Map. ArcGIS provides the angle 200.1 while Google and few other software provides it as 199.4.

 

Is ArcGIS assuming earth as FLAT surface while other assumes it as spherical? Any other reason?

 

 

Location 1 coordinates are  - 18 59 54.70, 72 50 32.33

 

Location 2 coordinates are  - 19 5 10.077, 72 52 28.909

 

Angle between Location 1 and Location 2 is 200.0668 Degree while Google says 199.4

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