=λ (let) Any point on this line is B(2λ+1,3λ−1,−2λ+1) and direction ratios of this line =(2,3,−2)=d1 Let given point be A(0,1,2). Then direction ratio of AB=(2λ+1,3λ−2,−2λ−1)=d2 ∵ Both lines are perpendicular to each other. ∴d1⋅d2=0 2(2λ+1)+3(3λ−2)−2(−2λ−1)=0 ⇒4λ+2+9λ−6+4λ+2=0 ⇒17λ=2 λλ=2∕17 ∴ Direction ratio of required line d2=(21,−28,−21) =(3,−4,−3)=(−3,4,3) This line passes through A(0,1,2). ∴ Required equation of line ⇒