1.

If vec(a)=2hat(i)+3hat(j)-5hat(k),vec(b)=mhat(i)+nhat(j)+12hat(k)andvec(a)xxvec(b)=vec(0), then (m,n) =

Answer»

`((-24)/(5),(-36)/(5))`
`((-24)/(5),(36)/(5))`
`((24)/(5),(-36)/(5))`
`((24)/(5),(36)/(5))`

ANSWER :A


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