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If a line makes angles 90o," "135o," ...

If a line makes angles `90o," "135o," "45o` with the x, y and z-axes respectively, find its direction cosines.

Text Solution

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The correct Answer is:
`(1)/(sqrt(2)), - (1)/(sqrt(2)),0`
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If a line makes angles 90^o,135^o,45^o with the x, y and z-axes respectively, find its direction cosines.

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Knowledge Check

  • If a, b, c are the angles that a line makes with the positive directions of x, y and z axis, respectively, then the direction cosines of the lines are

    A
    sin a, sin b, sin c
    B
    cos a, cos b, cos c
    C
    tan a, tan b, tan c
    D
    none of the above

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