If $\tan \theta = \frac{{ - 4}}{3},$ then $\sin \theta = $

  • [IIT 1979]
  • A

    $-4/5$ but not $4/5$

  • B

    $-4/5 $ or $4/5$

  • C

    $4/5$ but not $-4/5$

  • D

    None of these

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