How can the angle between A×B and B×A be 180 degrees?
1 Answer
Jun 30, 2018
ie
If you look at the definition of the vector product:

#bbA times bbB = abs bbA abs bbB sin theta_(A B) \ bbhatn# 
#bbB times bbA = abs bbA abs bbB sin theta_(B A) \ bbhatn'#
And
#theta_(AB) = theta_(BA)#
But because of the operation of the Right hand rule,