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| 1. |
\begin{array} { l } { \text { The direction cosines of } \overline { A B } \text { are } } \\ { - 2 , \quad 2 , \quad 1 . \text { If } \quad A = ( 4,1,5 ) \text { and } } \\ { I ( A B ) = 6 \text { units, find the } } \\ { \text { coordinates of B. } } \end{array} |
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