यदि $\frac{3\pi}{4} < \alpha < \pi$ है,तो $\sqrt{\csc^2 \alpha + 2\cot \alpha}$ का मान ज्ञात कीजिए।

  • A
    $1 + \cot \alpha$
  • B
    $1 - \cot \alpha$
  • C
    $-1 - \cot \alpha$
  • D
    $-1 + \cot \alpha$

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$\frac{\tan ^{2} \theta}{\sec \theta+1}-\sec \theta$ का मान ज्ञात कीजिए।

$\frac{\sin \theta + \sin 2\theta }{1 + \cos \theta + \cos 2\theta } = $

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

यदि $\cos A = \frac{3}{4}$ है,तो $32\sin \frac{A}{2}\cos \frac{5A}{2} = $

यदि समीकरणों $x = a \cos(\theta - \alpha)$ और $y = b \cos(\theta - \beta)$ से $\theta$ को विलुप्त किया जाए,तो $\frac{x^2}{a^2} + \frac{y^2}{b^2} - \frac{2xy}{ab} \cos(\alpha - \beta)$ का मान क्या होगा?

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