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      Question

      If a line has direction ratios 2, – 1, – 2,

      determine its direction cosines.
      A 2/5, -1/3, -2/3 Correct Answer Incorrect Answer
      B 2/3, -1/3, -1/3 Correct Answer Incorrect Answer
      C 2/3, -1/3, -2/3 Correct Answer Incorrect Answer
      D 2/7, -1/3, -2/3 Correct Answer Incorrect Answer

      Solution

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