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9. A triangle is defined by vectorA [ 2, 4, 2], B [4,10,12] and C [6, 16, 10]. Solve for all the angles of the

9. A triangle is defined by vectorA [ 2, 4, 2], B [4,10,12] and C [6, 16, 10]. Solve for all the angles of the triangle. [6 marks]

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