The coordinate axes are rotated through an angle of $135^o$. If the coordinates of a point $P$ in the new system are $(4, -3)$,then the coordinates of $P$ in the original system are:

  • A
    $\left( \frac{1}{\sqrt{2}}, \frac{7}{\sqrt{2}} \right)$
  • B
    $\left( \frac{1}{\sqrt{2}}, \frac{-7}{\sqrt{2}} \right)$
  • C
    $\left( \frac{-1}{\sqrt{2}}, \frac{-7}{\sqrt{2}} \right)$
  • D
    $\left( \frac{-1}{\sqrt{2}}, \frac{7}{\sqrt{2}} \right)$

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