Asked by raymon

What can be said about two vectors whose cross product is the zero vector?
Answered by pat
they are parallel
Answered by pat
since the cross product involves the cosine function. Cos(180) = 0 :)
Answered by pat
*** cos(90) = 0 my mistake
Answered by bobpursley
Good lord.

xross product is a sine function, if it is zero, the angle is zero or 180, so they are in the same or opposite directions.
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