A \( \pm \frac{\pi}{4} + \cos^{-1} \left( \frac{1}{2\sqrt{2}} \right) \)
B \( \pm \frac{\pi}{4} + \sin^{-1} \left( \frac{1}{2\sqrt{2}} \right) \)
C \( \pm \frac{\pi}{2} + \cos^{-1} \left( \frac{1}{2\sqrt{2}} \right) \)
D \( \pm \frac{\pi}{2} + \sin^{-1} \left( \frac{1}{2\sqrt{2}} \right) \)
E None of the above