Question

If the direction ratios of the lines L, and L2 are
2,-1,1 and 3,-3,4 respectively, then the
direction cosines of a line that is perpendicular
to both L, and L, are
1 + 2
+ 1 + 1
1)
+
To
Top To
+
It
+
3) + + at
+
+​

Answer 1

Answer:

1st option is the right answer