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trying to understand the maths behind trilateration, we have 3 access points (AP 1,2,3) and we know the centre coordinates of theses 3 (AP). Lost device (X) is the location where all 3 circle intersect.

example GRID = x=30, y=30.

Known Locations: AP1 = (5,5), AP2 = (5,15), AP3 = (20,10).

Unknown Location: X

Lets say X = (9,11)

how do we work out the intersection of all 3 circles by the maths.

your help is greatly appreciated.

Here i am trying it on graph paper

Gman
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    This question might be better suited for http://math.stackexchange.com/ ...? – Serge Aug 01 '14 at 15:59
  • I have move the question to [here][1] (math.stackexchange.com) [1]: http://math.stackexchange.com/questions/884807/find-x-location-using-3-known-x-y-location-using-trilateration – Gman Aug 01 '14 at 16:25

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