1.

If the two lines, whose d.C.s l,m,n are given by the equation al+bm+cn=0 and fmn + gnl + hlm=0, are mutually perpendicular, then

Answer»

`f/a + G/B + h/C=0`
`a/f + b/g +c/h=0`
`f/a^(2) + g/b^(2) + h/c^(2)=0`
`a^(2)/f + b^(2)/g +c^(2)/h=0`

ANSWER :A


Discussion

No Comment Found

Related InterviewSolutions