Find the angle between two points in 3D plot.

2019 8 22

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How can we find the angle between two points in 3D plot along y-axis?

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Bruno Luong 2019-8-22

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if the 3D (x-y-z) coordinates of your two points are P1 and P2, both are (3 x 1) or (1 x 3) vectors

angleradian = acos((P2(2)-P1(2)) / norm(P2-P1))

Ali Raza 2019-8-22

Thank U very much, I got this.

Henry Ukwu 2020-4-17

can i get the angle between the two points in 3D space when projected on xy plane ?

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