5. Show that each of the given three vectors is a unit vector: 1/7(2i + 3j + 6k), 1/7(3i – 6j + 2k), 1/7(6i + 2j – 3k) Also, show that they are mutually perpendicular to each other. 1/7(3i - 6j + 2k) 1/7(6i + 2j - 3k) Also 5. Show that each of the [...]
