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Question: Show that |u dot v| = ||u|| ||v|| if and only if u and v are parallel.
I know that u and v are parellel if their dot product is 1.
so if |u dot v| = 1 , fair enough, but how can I show that ||u|| ||v|| will also be equal to 1
any help would be greatly appreciated, thanks in advance :)
I know that u and v are parellel if their dot product is 1.
so if |u dot v| = 1 , fair enough, but how can I show that ||u|| ||v|| will also be equal to 1
any help would be greatly appreciated, thanks in advance :)