The angles made by the vector $\vec{A} = 2\hat{i} + 3\hat{j}$ with the $x$-axis and the $y$-axis are respectively:

  • A
    $\tan^{-1}(2/\sqrt{13}), \tan^{-1}(3/\sqrt{13})$
  • B
    $\cos^{-1}(2/\sqrt{13}), \cos^{-1}(3/\sqrt{13})$
  • C
    $\cos^{-1}(1/\sqrt{2}), \cos^{-1}(1/\sqrt{3})$
  • D
    $\sin^{-1}(1/\sqrt{6}), \sin^{-1}(1/2\sqrt{3})$

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