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Let vec aa n d vec b be two non-colline...

Let ` vec aa n d vec b` be two non-collinear unit vector. If ` vec u= vec a-( vec adot vec b) vec ba n d vec v= vec axx vec b ,t h e n| vec v|` is `| vec u|` b. `| vec u|+| vec udot vec a|` c. `| vec u|+| vec udot vec b|` d. `| vec u|+ hat udot| vec a+ vec b|`

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