The points A, B and C have coordinates (3, -2, 4), (5, 4, 0) and (11, 6, -4) respectively. Find the vector BA ) (i) (b) (c) (ii) Show that the size of angle ABC is The line / has equation r = (i) Verify that C lies on 7. (ii) 8 -3+A 32 Show that AB is parallel to 1. 1 3 COS-¹ (-/-) The quadrilateral ABCD is a parallelogram. Find the coordinates of D.

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