यदि $180^{\circ} < \theta < 270^{\circ}$ है,तो $\sqrt{4 \sin^{4} \theta + \sin^{2} 2\theta} + 4 \cos^{2} \left(\frac{\pi}{4} - \frac{\theta}{2}\right)$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $4$
  • C
    $3$
  • D
    इनमें से कोई नहीं

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$\frac{{\tan A + \sec A - 1}}{{\tan A - \sec A + 1}} = $

$\cot 70^\circ + 4\cos 70^\circ$ का मान क्या है?

यदि $(1 + \sin A)(1 + \sin B)(1 + \sin C) = (1 - \sin A)(1 - \sin B)(1 - \sin C)$ है,तो प्रत्येक पक्ष किसके बराबर है?

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