The angle between the line whose d.c.'s are connected by the relations `l^(2)+m^(2)-n^(2)=0` and l+m+n=0 is

Find the angle between the lines whose direction cosines are connected by the relations l+m+n=0a n d2lm+2n l-m n=0.

Find the angle between the lines whose direction cosines are connected by the relations l+m+n=0a n d2//m+2n l-m n=0.

The angle between the lines whose direction cosines are given by the equatios l^2+m^2-n^2=0, m+n+l=0 is

Find the angle between the lines whose direction cosines have the relations l+m+n=0 and 2l^(2)+2m^(2)-n^(2)=0 .

The angle between the lines whose direction cosines satisfy the equations l+m+n=""0 and l^2=m^2+n^2 is (1) pi/3 (2) pi/4 (3) pi/6 (4) pi/2

Find the angle between the lines whose direction cosines are given by the equations 3l + m + 5n = 0 and 6mn - 2nl + 5lm = 0

Find the angle between the lines whose direction cosine are given by the equation: 2"l"+2"m"-"n"=0, and "m n"+"ln"+"lm"=0

Find the angle between the lines whose direction cosines are given by the equations 3l+m+5n=0,6m n-2n l+5lm=0

Find the angle between the lines whose direction cosine are given by the equation: "l"+2"m"+3"n"=0" and "3"l m"-4"ln"+"m n"=0

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