$\tan 5^{\circ} \cdot \tan 25^{\circ} \cdot \tan 45^{\circ} \cdot \tan 65^{\circ} \cdot \tan 85^{\circ}$ का मान $\ldots \ldots \ldots \ldots$ है।

  • A
    $3$
  • B
    $2$
  • C
    $1$
  • D
    $0$

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यदि $\sin A = \frac{1}{2}$ है,तो $\cot A$ का मान ज्ञात कीजिए।

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