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If vec p , vec q , vec r denote vector ...

If ` vec p , vec q , vec r` denote vector ` vec bxx vec c , vec cxx vec a , vec axx vec b` , respectively, show that ` vec a` is parallel to ` vec qxx vec r , vec b` is parallel ` vec rxx vec p , vec c` is parallel to ` vec pxx vec qdot`

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