The solution of \( \sin ^{-1} x-\sin ^{-1} 2 x=\pm \frac{\pi}{3} \) is (A) \( \pm \frac{1}{3} \)...

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The solution of \( \sin ^{-1} x-\sin ^{-1} 2 x=\pm \frac{\pi}{3} \) is
(A) \( \pm \frac{1}{3} \)
(B) \( \pm \frac{1}{4} \)
(C) \( \pm \frac{\sqrt{3}}{2} \)
(D) \( \pm \frac{1}{2} \)
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