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Lines and Planes 13. Rounded to one decimal place, determine the acute angle between these planes: m1: 2x + 2y - z +5 = 0

Lines and Planes

13. Rounded to one decimal place, determine the acute angle between these planes: m1: 2x + 2y - z +5 = 0 and #2: x - 4y - 8z + 5 = 0 [4 marks]

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