Question: Answer ANY THREE questions in this section. Each question carries 20 marks. B1. Given OA=5i+2j,OB=5i+ and OC=2i+3+4k (a) Find the vector AB by using the

Answer ANY THREE questions in this section. Each question carries 20 marks. B1. Given OA=5i+2j,OB=5i+ and OC=2i+3+4k (a) Find the vector AB by using the position vector OA and OB. (4 marks) (b) Evaluate OAOB (3 marks) (c) Find the angle between OA and OB. (4 marks) (d) Find the area of the parallelogram by using cross product ( 6 marks) OBOA. (e) By using the formula OC(OBOA), find the volume of the (3 marks) parallelepiped with principal edges OA,OB and OC

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