Cosine Similarity A Similarity measure of vectors AAA and BBB based on the Euclidean Dot Product Formula cosθ=A⋅B∥A∥2∥B∥2\cos \theta=\frac{A \cdot B}{\|A\|_2\|B\|_2}cosθ=∥A∥2∥B∥2A⋅B