Find the values of p so that the lines `(1-x)/3=(7y-14)/(2p)=(z-3)/2`and `(7-7x)/(3p)=(y-5)/1=(6-z)/5`are at right angles.

Find the value of p so that the lines (1-x)/3=(7y-14)/(2p)=(z-3)/2 " and " (7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles.

Find the value of p so that the lines (1-x)/3=(7y-14)/(2p)=(z-3)/2 and (7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles .

Find the value of p so that the lines (1-x)/3=(7y-14)/(2p)=(z-3)/2 and (7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles.

Find the values of p so that the lines (1-x)/(3)=(7y-14)/(2p)=(z-3)/(2)(7-7x)/(3p)=(y-5)/(1)=(6-z)/(5) are at right angles.

Find the value of p so that the lines (1-x)/(3)= (7y-14)/(2p)= (z-3)/(2) and (7-7x)/(3p)= (y-5)/(1)= (6-z)/(5) are at right angles

Find the values p so that line (1-x)/(3)=(7y-14)/(2p)=(z-3)/(2) and (7-7x)/(3p)=(y-5)/(1)=(6-z)/(5) are at right angles.

Find the value of p so that the lines : l_1:(1-x)/3=(7y-14)/(2p)=(z-3)/2 and l_2: (7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles. also find the equations of the line passing through (3,2,-4) and parallel to line l_1 .

Find the values p so that line (1-x)/3=(7y-14)/(2p)=(z-3)/2a n d(7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles.

Find the values p so that line (1-x)/3=(7y-14)/(2p)=(z-3)/2a n d(7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles.

Find the values p so that line (1-x)/3=(7y-14)/(2p)=(z-3)/2a n d(7-7x)/(3p)=(y-5)/1=(6-z)/5 are at right angles.