1.

The shortest distance between the skew lines l_(1): barr=bara_(1)+lambdabarb_(1) and l_(2): barr= bara_(2)+mubarb_(2) is

Answer»

`((bara_(2)-bara_(1)).barb_(1)xxbarb_(2))/(|barb_(1)xxbarb_(2)|)`
`((bara_(2)-bara_(1)).bara_(2)xxbarb_(2))/(|barb_(1)xxbarb_(2)|)`
`((bara_(2)-barb_(2)).bara_(1)xxbarb_(1))/(|barb_(1)xxbarb_(2)|)`
`((bara_(1)-barb_(2)).barb_(1)xxbara_(2))/(|barb_(1)xxbara_(2)|)`

ANSWER :A


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