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MHT CET2011MathematicsVector Algebra

A vector v is equally inclined to the x -axis, y -axis and z -axis respectively, its direction cosines are

Options

  1. A. < 1 3 , 1 3 , 1 3
  2. B. < - 1 3 ,- 1 3 ,- 1 3
  3. Cor
  4. DNone of the above

Correct answer

C. or

Step-by-step solution

Let the vector v make an angle with each of the three axes, then direction cosine of v are array l Also, ² + ² + ² =1 ² =1 / 3 = 1 3 array Hence, direction cosine of v are Or

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