If is and ?
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Originally Posted by shilz222 If is and ? what are ?
they seem to be unit vectors, but unit vectors of what? or in what direction?
in the direction of and is a perpendicular unit vector.
Originally Posted by shilz222 in the direction of and is a perpendicular unit vector. you mean ?
note that: for a vector two perpendicular vectors are or , they point in opposite directions. you put the vector
yes, that was a typo. yeah in the book, .
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