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December 21, 2014

December 21, 2014

Posted by **steve steve steve steve steve steve steve steve** on Friday, July 11, 2014 at 10:24am.

- physics -
**Steve**, Friday, July 11, 2014 at 11:07amwell you know that

AxB = -(BxA)

So, if they are equal, they are zero.

That means the angle is zero or 180. They are parallel.

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