How to calculate co-ordinates from radii from 2 points of known co-ordinates

Discussion created by researchtfs on Nov 21, 2013

I have a forestry square plot of 30m, with sides called A, B, C, & D.  I know the co-ordinates for both ends of side A.  For every tree within the plot, I have a measurement for the distance to both ends of side A.  I wish to know the geographic co-ordinates of every tree.

Is there a way for ArcGIS to calculate this?  I don't have Spatial Analyst, though do have the ET add-ins.

Regards, Mick.