At an angle of $30^{\circ}$ to the magnetic meridian, the apparent dip is $45^{\circ} .$ Find the true dip :

  • [JEE MAIN 2021]
  • A

    $\tan ^{-1} \frac{1}{\sqrt{3}}$

  • B

    $\tan ^{-1} \frac{\sqrt{3}}{2}$

  • C

    $\tan ^{-1} \sqrt{3}$

  • D

    $\tan ^{-1} \frac{2}{\sqrt{3}}$

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