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Which set can be direction ratios of the x-axis?
A(5, 0, 0)
B(0, 5, 0)
C(1, 1, 0)
D(0, 0, 5)
Answer & Solution
Correct answer: A. (5, 0, 0)
The x-axis has y and z components zero, so its ratios are (a, 0, 0) with a nonzero.
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