scalar product
The scalar product of two vectors, (x
_{1}
,y
_{1}
) and (x
_{2}
,y
_{2}
), is defined as (x
_{1}
x
_{2}
+ y
_{1}
y
_{2}
), which is a number (a scalar) instead of a vector. This quantity is useful for determining the angle between the two vectors.
Related Term:
vector product
(cross product)
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