MATLAB: Angles between 3 vector in 3d

Question

Hi I am trying to find angle between 3 vectors;

Terminal vector:-0.063695 -0.588189 2.333766

1. vector: 0.008239 -0.640457 2.295980 2.vector: -0.024011 -0.216596 2.461521

Could anyone help me?

Thanks in advance

Answer 1

You can make use of the dot product (between vectors):

vec1     = [-0.063695  -0.588189  2.333766];
vec2     = [0.008239  -0.640457  2.295980];
angle_12 = acos(dot(vec1,vec2)/(norm(vec1)*norm(vec2)))

and similar for the other pairs of vectors.