Show that the line `(x-5)/7=(y=2)/(-5)=z/1 and x/1 =y/2=z/3` are perpendicular to each other.

Show that the lines (x-5)/7=(y+2)/(-5)=z/1and x/1=y/2=z/3\ are perpendicular to each other.

Show that the lines (x-5)/7=(y+2)/(-5)=z/1andx/1=y/z=z/3 are perpendicular to each other.

Show that the lines (x-5)/(7)=(y+2)/(-5)=(z)/(1) and quad (x)/(1)=(y)/(2)=(z)/(3) are perpendicular to each other.

Show that the lines x=-y =2z " and " x+2 =2y -1 =-z +1 are perpendicular to each other .

Show that the lines (x+5)/(7) = (y +2)/(-5) = (z)/(1) and (x)/(1) = (y)/(2) = (z )/(3) are perpendicular to each other.

Show that the lines (x-5)/(7) =(y+2)/(-5)=(z)/(1) " and " (x)/(1) =(y)/(2)=(z)/(3) are at right angles .

Show that the lines (x-5)/4=(y-7)/4=(z+3)/(-5) and (x-8)/7=(y-4)/1=(z-5)/3 intersect each other

If the lines x−2/1=y−2/1=2 − z/k and x−1/k=4 −y/1=z−5/2 are perpendicular to each other, then the value of k is

If the lines (2x-1)/2=(3-y)/1=(z-1)3 and (xc+3)/2=(z+1)/p=(y+2)/5 are perpendicular to each other then p is equal to (A) 1 (B) -1 (C) 10 (D) -7/5

If the lines x-2 = ay-3 =(2-z)/3 and bx +1 = y+4=z are perpendicular to each other, then 1/a + 1/b=