The dot product and the angle between two vectors
The dot product of vectors and is the scalar . The angle between vectors and can be computed using their dot product. The dot product is sometimes called the inner product or scalar product, because the product results in a scalar, not a vector.
Use this interactive figure to help you find the angle between two vectors. You can drag points to change the vectors and . Notice that when you hover over a point, arrows appear showing you how the point will move. Click on the point without dragging to change how the point moves.