I measured the angle between two lines with Measure Angle. The result is 39.531°. In attribute table I used this script for calculating azimuth with Field Calculator:
The result of Field Calculator is 46.62005°. Why are there different results?
Coordinates: Latitude1: 39.0390110 Longitude1: 33.8493433 Latitude2: 39.0413637 Longitude2: 33.8518330