I'm trying to calculate the angle between three 3D points. The results are not what I expect.

It looks like you're on the right track: prior to normalizing the vectors, translate the vectors such that B is at (0,0,0). But your translation looks wrong. Think @BA instead of @AB, walk through your math again, and see if you can spot the problem.

In reply to Re: Calculate Angle Between Three 3D Points by dws
in thread Calculate Angle Between Three 3D Points by Anonymous Monk

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