The angle between two vectors, in 2D or 3D

The formula for the angle between two vectors, a and b is θ=cos-1 ( a•b / |a||b|). Where vector a is (a x a y ) and vector b is (b x b y ), the dot product a•b=a x b x + a y b y . The magnitude of the

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How to Find the Angle Between Two Vectors: 12 Steps

This calculus 3 video tutorial explains how to find the angle between two vectors in a 2D system and in a 3D system.My Website: