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Questions  

The shortest distance between the lines xa+dαδ=yaα=zadα+δ,xb+cβγ=ybβ=zbcβ+γ is

a
a+b+c+d
b
α+β+γ
c
aα+bβ+cγ
d
0

detailed solution

Correct option is D

=a−d−b−ca−ba+d−b−cα−δαα+δβ−γββ+γC1→C1−C2,C3→C3−C2c−da−bd−c−δαδ−γβγ=0(∵C1 and C3 are identical)

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