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

  • A
    $2$
  • B
    $2 \sin 20^{\circ} \cdot \operatorname{cosec} 40^{\circ}$
  • C
    $4$
  • D
    $4 \sin 20^{\circ} \cdot \operatorname{cosec} 40^{\circ}$

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$\cot 70^{\circ} + 4 \cos 70^{\circ}$ का मान है

यदि $(\alpha+\beta)$,$\frac{\pi}{2}$ का गुणज नहीं है और $3 \sin (\alpha-\beta)=5 \cos (\alpha+\beta)$ है,तो $\tan \left(\frac{\pi}{4}+\alpha\right)+4 \tan \left(\frac{\pi}{4}+\beta\right)=$

$\frac{\cot A}{1-\tan A}+\frac{\tan A}{1-\cot A} = ?$

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