यदि $\frac{\sec \theta+\tan \theta}{\sec \theta-\tan \theta}=2 \frac{51}{79}$ है,तो $\sin \theta$ का मान ज्ञात कीजिए।

  • A
    $\frac{65}{144}$
  • B
    $\frac{39}{72}$
  • C
    $\frac{91}{144}$
  • D
    $\frac{35}{72}$

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

यदि $\sin \theta_1 + \sin \theta_2 + \sin \theta_3 = 3$ है,तो $\cos \theta_1 + \cos \theta_2 + \cos \theta_3 = $

यदि $\tan \alpha = (1 + 2^{-x})^{-1}$ और $\tan \beta = (1 + 2^{x+1})^{-1}$ है, तो $\alpha + \beta$ का मान ज्ञात कीजिए:

$\cot (45^\circ + \theta ) \cot (45^\circ - \theta ) = $

यदि $A = \sin^2 \theta + \cos^4 \theta$ है,तो $\theta$ के सभी वास्तविक मानों के लिए:

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