How to calculate the angles that define the position your arm is in

samedi 28 février 2015

I have 3 points ##S##, ##E##, and ##W## each with ##x##, ##y##, and ##z## positions.

##S## is always at ##[1,1,1]##

##S## is connected to ##E##, and ##E## is connected to ##W## by a line.

I want to calculate the azimuth and polar angles between ##E## and the vertical, and the azimuth and...

How to calculate the angles that define the position your arm is in