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If a line lies in the octant OXYZ and it...

If a line lies in the octant OXYZ and it makes equal angles with the axes, then

A

`l = m = n = (1)/(sqrt3)`

B

`l = m = n = (pm1)/(sqrt3)`

C

`l = m = n = (-1)/(sqrt3)`

D

`l = m = n = (pm 1)/(sqrt2)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The direction cosines of a line that makes equal angles with the three axes in the space are

    A
    `pm1/sqrt3,pm1/3,pm1/3`
    B
    `pm1/sqrt3,pm1/sqrt3,pm1/sqrt3`
    C
    `pm6/7,pm2/7,pm3/7`
    D
    `pmsqrt(1/7), pmsqrt(3/14),pmsqrt(1/14)`

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