How to find the angle between two vectors?

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I've seen a few other questions with the same title, but they seem to be trying to find an angle from two points. This diagram describes what I want: alt text

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Answer 1

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Answer by $$anonymous$$ · May 03, 2015 at 06:37 PM

Hey, you can use Dot Product or some trigonometry:

              // Get Angle in Radians
              float AngleRad = Mathf.Atan2(Vect1.y - Vect2.y, Vect1.x - Vect2.x);
              // Get Angle in Degrees
              float AngleDeg = (180 / Mathf.PI) * AngleRad;

Another post, might help you as well: alt text

untitled.png (11.3 kB)

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douglasg14b · May 03, 2015 at 07:00 PM 1

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Thanks for the answer! I just found out that Vector3.Angle() will give you the actual angle if the unity vectors are normalized.

Answer 2

Answer by dbdenny · Jun 23, 2020 at 06:16 AM

 Vector3.Angle(Vector3 from, Vector3 to);

Reference here: Manual of Vector3.Angle

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How to find the angle between two vectors?

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