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Consider the lines L _(1) : (x +1)/( 3) = (y+2)/(1) = (z+1)/(2), L_(2): (x-2)/(1) = (y+2)/(2) = (z-3)/(3) The unit vector perpendicular to both L _(1) and L _(2) is |
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Answer» `(-hati + 7 hatj + 7 HATK)/(sqrt99)` |
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