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I have a few exercises to do and I can't do it at all. I am newbie to this field. I use QGIS 3.4.

Exercise 1
What is the azimuth between the starting point and the Z place? I must write the value in sexagesimal degrees to a maximum of one decimal place I don't know what to do.

I have this data:

[X = 518613,71] 
[Y = 275085,35]
[Dist_b =2304] 
[Azimuth_b = 15]
[Dist_c = 66]
[Azimuth_c = 316]
[Dist_d = 74]

Unfortunately I can't add the image because it's too big. I tried to solve the exercise and it gave me 130.1 degrees. But I don't know if it's correct.

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1 Answer 1

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Could be wrong but if sexagesimal degrees 130.1 should be 130°6' http://ghiorzi.org/sexagesi.htm

For azimuth calculation, not sure I understand your problem (sorry but lack of infos, so unclear for me) but look at How to calculate azimuth in QGIS field calculator? for azimuth calculation. You will need your coordinates using WGS 84 (degrees) as from your question, one of your input point is projected ([X = 518613,71], [Y = 275085,35])

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  • I apologise for the misunderstanding. Thank you for your answer. I searched before asking here and I couldn't solve the exercise. Source coordinate reference system for my data is: EPSG:3844 - Pulkovo 1942 (58). I have to work in this projection. I have only one point that was assigned to me from the attribute table. This is the requirement of the exercise: "What is the azimuth between the starting point and the Z place?" Or is it still unclear? :/
    – Midgard64
    May 23, 2020 at 6:53
  • Or the solution is in the link sent by you and I can't handle it. I'll try again. (:
    – Midgard64
    May 23, 2020 at 6:58
  • You have 1 points, 3 distances, 2 azimuths, you should be able to find the last point by doing triangulation
    – ThomasG77
    May 23, 2020 at 7:35

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