$\sqrt{3} \operatorname{cosec} 20^{\circ} - \sec 20^{\circ}$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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$\cot 18^{\circ} \cdot \cot 36^{\circ}+1=$

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