Hey guys.
Well, I'm stumped.
A friend of mine is currently studying at Uni and has come a question that needs answering. He turned to me for help. It's a graded question, so I am not playing with his actual numbers and won't pass on any numbers here.
My problem is this- I've never seen this problem before. I kept all my notes and study material but none of it covers this question.
It's a braced quad question, with two fixed points and two free points. It requires the variation of coordinates method to solve it. My problem is, the question itself gives angles + distances, whereas I learned how to solve it with directions + distances. Each angle has a different angular SD. The distance SDs are all equal.
His teacher isn't handing out the equation. What a world we live in.
Does anyone know what the equation is? I can't for the life of me figure out how to form the observation equation for the matrix. I got it to work with my own numbers in Starnet, then converted the angles to directions by de-propagating the angular SDs and got the same result in Starnet. But I can't reproduce it long-hand.
Would anyone happen to have the equation laying around? Has anyone seen this before?
Thanks,
Mick.