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

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

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 two lines whose direction cosines are given by the equation l+m+n=0,2l+2m-mn=0

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

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