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JEE Main2004MathematicsStraight LinesActual

A line makes the same angle , with each of the x and z axis. If the angle , which it makes with y -axis, is such that ^2 =3 ^2 , then ^2 equals

Options

  1. A2 3
  2. B1 5
  3. C3 5
  4. D2 5

Correct answer

C. 3 5

Step-by-step solution

I= , m= , n= ^2 + ^2 + ^2 =1 2 ^2 = ^2 =3 ^2 (given) ^2 =3 / 5

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