Question: Please answer urgently! Part 3: Thinking [13 marks] 20. Given a = [6, -5, 1], b = [-3,5, -1] and c = [8,5, -2], find
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Please answer urgently!
![= [6, -5, 1], b = [-3,5, -1] and c = [8,5,](https://s3.amazonaws.com/si.experts.images/answers/2024/06/666716a092b3c_032666716a06bf81.jpg)
Part 3: Thinking [13 marks] 20. Given a = [6, -5, 1], b = [-3,5, -1] and c = [8,5, -2], find a ) b . c [2 marks] b) axc [2 marks] 32. Deter c) 0, the angle between a and c [3 marks] d) projab [3 marks] e) Are the vectors a, b and c coplanar? Show your answer algebraically. [3 marks]
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