मान लीजिए $f(\theta) = \sin ( \tan ^{-1} ( \frac{\sin \theta}{\sqrt{\cos 2 \theta}} ) )$,जहाँ $-\frac{\pi}{4} < \theta < \frac{\pi}{4}$,तो $\frac{d}{d(\tan \theta)}(f(\theta))$ का मान ज्ञात कीजिए।

  • A
    $-1$
  • B
    $1$
  • C
    $\frac{1}{\sqrt{2}}$
  • D
    $\sqrt{2}$

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