Triangulation Problem

• Subject: [mg2968] Triangulation Problem
• From: techie at io.org (david hoare)
• Date: 17 Jan 1996 04:45:53 -0600
• Approved: usenet@wri.com
• Distribution: local
• Newsgroups: wri.mathgroup
• Organization: Internex Online, Toronto
• Sender: mj at wri.com

OK...Here's what should be an easy one - - well not for me...

I am looking for the trigonometric / algebreic  formulae one would use
to triangulate an unknown position, knowing 3 fixed points and the
respective distances to the unknown point. (make sence?)
Oh - in 3 dimensional space.

And actually, the reverse operations would be handy too...ie: given a
known central point, AND 3 other fixed points, how to find the lengths
of the lines required to meet at that first point, in 3D.

It's for a program I'm writing, and it's been a while since I've done
this sort of thing - - my math has left me!
Any Help would be GREATLY appreciated!!

Thanks,
David.
techie at io.org

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