Shortest distance between the lines x−11=y−11=z−11 and x−21=y−31=z−41 is equal to
A
√14
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B
√7
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C
√2
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D
√3
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Solution
The correct option is C√2 The given lines are parallel.
From the figure, we get BC=(2−1)1√3+(3−1)1√3+(4−1)1√3 =1+2+3√3=2√3 AB=√1+4+9=√14
Shortest distance = AC=√14−12=√2