Find the shortest distance between lines vec r = 6 hat i +2 hat j +2 hat k + lamda ( hat i -2 hat j + 2 hat k) and

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Q 1815167969.     Find the shortest distance between lines
vec r = 6 hat i +2 hat j +2 hat k + lamda ( hat i -2 hat j + 2 hat k) and
 vec r = -4hat i - hat k + mu (3 hat i - 2 hat j - 2 hat k)

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