$2 \sin ^{2} \theta + 3 \cos ^{2} \theta$ का न्यूनतम मान क्या है?

  • A
    $1$
  • B
    $3$
  • C
    $2$
  • D
    $4$

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यदि $\tan A = \frac{n}{n+1}$ और $\tan B = \frac{1}{2n+1}$ है,तो $\tan (A+B)$ का मान ज्ञात कीजिए।

यदि $\frac{\sec 8\theta - 1}{\sec 4\theta - 1} = \frac{a + b\tan^2 2\theta}{1 + c\tan^2 2\theta + d\tan^4 2\theta}$ (जहाँ $\theta \neq \frac{n\pi}{16}, n \in I$),तो $(a - b + c - d)$ का मान है -

$\tan \theta \sin \left( \frac{\pi }{2} + \theta \right) \cos \left( \frac{\pi }{2} - \theta \right) = $

$\sqrt {\frac{{1 - \sin A}}{{1 + \sin A}}} = $

यदि $\theta$ एक न्यून कोण है और $\sin \frac{\theta}{2} = \sqrt{\frac{x - 1}{2x}}$ है,तो $\tan \theta$ का मान ज्ञात कीजिए।

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