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Dot product (view source)

Revision as of 03:41, July 5, 2018

4 bytes removed ,  03:41, July 5, 2018
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: <math>\vec{x} \cdot \vec{y} = |\vec{x}||\vec{y}|\cos\theta</math>
 
: <math>\vec{x} \cdot \vec{y} = |\vec{x}||\vec{y}|\cos\theta</math>
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where <math>|\cdot|</math> is the [[vector norm]] and <math>\theta</math> is the angle between the vectors.  Note that the vectors are perpendicular
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where <math>|\cdot|</math> is the vector norm and <math>\theta</math> is the angle between the vectors.  Note that the vectors are perpendicular
 
(or [[orthogonal]]) if and only if their dot product is zero.
 
(or [[orthogonal]]) if and only if their dot product is zero.
  
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