यदि $A, B, C$ एक त्रिभुज के कोण हैं,तो $\sin 2A + \sin 2B - \sin 2C$ किसके बराबर है?

  • A
    $4\sin A \cos B \cos C$
  • B
    $4\cos A$
  • C
    $4\sin A \cos A$
  • D
    $4\cos A \cos B \sin C$

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यदि $a \cos \theta + b \sin \theta = p$ और $a \sin \theta - b \cos \theta = q$ है,तो $a, b, p$ और $q$ के बीच का संबंध क्या है?

$\sin 105^{\circ} + \cos 105^{\circ}$ का मान क्या है?

$\frac{{\cos {{10}^o} + \sin {{10}^o}}}{{\cos {{10}^o} - \sin {{10}^o}}} = $

$\sec ^{2} 12^{\circ}-\frac{1}{\tan ^{2} 78^{\circ}}$ का मान है

$\tan 5^{\circ} \tan 25^{\circ} \tan 45^{\circ} \tan 65^{\circ} \tan 85^{\circ} = $

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