1.

If the lines L_(1) and L_(2) " are given by " barr=(bari+2barj-bark)+t(2bari-3barj+bark) andbarr=(bari+barj+bark)+s(2bari+barj-bark) , then

Answer»

`L_(1) and L_(2)` are perpendicular
`L_(1) and L_(2)` are PARALLEL
`(L_(1) ,L_(2))=45^(@)`
`(L_(1) ,L_(2))=60^(@)`

Answer :A


Discussion

No Comment Found