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solve neatly with explanation Thinking (Store answers in your calculator. Round final answers to 1 decimal.) 19. Find the value of m where the vectors

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solve neatly with explanation

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Thinking (Store answers in your calculator. Round final answers to 1 decimal.) 19. Find the value of m where the vectors a = (-3,2,-5) and b = (3m,-2,m) and have an angle of 120. [6 marks]

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