1.

Find the equation of the plane passing through the line of intersection of the planes 2x + y - Z = 3,5x - 3y + 4z + 9 = 0 and parallel to the line `(x-1)/2=(y-3)/4=(z-5)/5`

Answer» `C=2*x+y-z-3=0``d=5*x-3*y=4*z+9=0`
so,(C+`lamda`d)
let `lamda`=A
equation of plane passing through the line of the intersection of these two plane
`(2*x+y-z-3)+A(5*x-3*y+4*z+9)`....(i)equation of the line=
`(x-1)/2=(y-3)/4=(z-5)/5`
`(2,4,5)` are the direction ratiosEquation of the plane=`2(2+5A)+4(1-3A)+5(4A-1)+9A-3=0`
on solvingA=-1/6putting in equation (i)you will get the equation equation of the plane`7*x+9*y-10*z=0` ...Ans


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