$ABCD$ एक आयत है जिसमें $AC$ एक विकर्ण है। $(\tan^2 \angle CAD + 1) \sin^2 \angle BAC$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $\frac{1}{4}$
  • C
    $1$
  • D
    $0$

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एक धनात्मक पूर्णांक $n$ के लिए,मान लीजिए ${f_n}(\theta ) = \left( {\tan \frac{\theta }{2}} \right)\,(1 + \sec \theta )\,(1 + \sec 2\theta )\,(1 + \sec 4\theta ) \dots (1 + \sec {2^n}\theta ).$ तो

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$\cos \alpha \sin (\beta - \gamma ) + \cos \beta \sin (\gamma - \alpha ) + \cos \gamma \sin (\alpha - \beta ) = $

$\cos 24^{\circ} + \cos 5^{\circ} + \cos 300^{\circ} + \cos 175^{\circ} + \cos 204^{\circ}$ का मान क्या है?

यदि $\sec \alpha + \tan \alpha = 2$ है,तो $\sin \alpha$ का मान ज्ञात कीजिए (मान लीजिए कि $0 < \alpha < 90^{\circ}$)।

$\tan 1^{\circ} \tan 2^{\circ} \tan 3^{\circ} \ldots \tan 89^{\circ}$ का मान क्या है?

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