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Question 350012
JEE Mathematics · Easy

Three Dimensional Geometry: Mixed MCQ

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MixedEasyQuestion 350012

Question

The direction cosines of the x-axis are:
  1. A
    (1, 0, 0)
    Correct
  2. B
    (0, 1, 0)
  3. C
    (0, 0, 1)
  4. D
    (1, 1, 0)

Correct answer

(1, 0, 0)

Explanation

The x-axis makes angles 0°, 90°, 90° with x, y, z axes. Direction cosines: (cos0°, cos90°, cos90°) = (1, 0, 0).

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