Find the direction cosines of the lines, connected by the relations: `l+m+n=0` and `2l m+2ln-m n=0.`

Find the direction colatines of the lines, connected by the relations: l+m+n=0 and 2lm+2ln-mn=0.

Find the direction cosines of the two lines which are connected by the relations l + m + n = 0 an mn - 2nl - 2lm = 0.

Find the direction cosines of the two lines which are connected by the relation l+m+n=0,mn−2nl−2lm=0

Find the direction cosines of the two lines which are connected by the relations l-5m+3n=0 and 7l^(2)+5m^(2)-3n^(2)=0-

Find the direction cosines of the two lines which are connected by th relations. l-5m+3n=0 and 7l^2+5m^2-3n^2=0

Find the direction cosines of the two lines which are connected by th relations.l-5m+3n=0 and 7l^(2)+5m^(2)-3n^(2)=0