2. Given ft and 13 below. If ll = 4,|13| = 6 and 6 = 135, determine: (5 marks) 11. (3)1'5X (b)- (c)(l)x t 3. Determine if& = [1, 4, 8], I; = [3,1,7] and E = [2,3, 5] are linearly dependent. (3 marks) 4. Given A(1,2,3), B(3,2,6) and C(4, 3, 2) determine: (9 marks) (a) the angle at A (b) the area of AABC (c) if D(3,0,1) is coplanar with A, B and C