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Find the angle between the line whose direction cosines are given by `l+m+n=0a n dl^2+m^2-n^2=0.`

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Find the angle between the line whose direction cosines are given by l+m+n=0a n d2l^2+2m^2-n^2=0.

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Knowledge Check

  • The angle between the lines whose direction cosines satisfy the equations l + m + n = 0 and l^(2) = m^(2) + n^(2) is

    A
    `(pi)/(3)`
    B
    `(pi)/(4)`
    C
    `(pi)/(6)`
    D
    `(pi)/(2)`

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