Is A Cross B Equal to Zero a Test for Orthogonal Cases?

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A cross B equals zero is a test for orthogonal cases.

If AxB=0 then A is perpendicular to B.
 
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Uh...is that a question?
 
Philosophaie said:
A cross B equals zero is a test for orthogonal cases.

If AxB=0 then A is perpendicular to B.
No, it's not. It is the dot product. If A and B are vectors, the A\cdot B= 0 if and only if they are orthogonal (perpendicular).

You are confusing this with the fact that if A and B are any two (three dimensional) vectors, then A\times B is perpendicular to both A and B.
 

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