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NDA2011MathematicsThree Dimensional GeometryActual

Consider the following relations among the angles , , made by a vectors with the coordinate axes: 1. 2 + 2 + 2 =-1 2. ^2 + ^2 + ^2 =1 Which of the above is/are correct?

Options

  1. A1 only
  2. B2 only
  3. CBoth 1 and 2
  4. DNeither 1 nor 2

Correct answer

A. 1 only

Step-by-step solution

The correct answer is option (A).

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