$\frac{\tan A + \sec A - 1}{\tan A - \sec A + 1} = $

  • A
    $\frac{1 - \sin A}{\cos A}$
  • B
    $\frac{1 - \cos A}{\sin A}$
  • C
    $\frac{1 + \sin A}{\cos A}$
  • D
    $\frac{1 + \cos A}{\sin A}$

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यदि $\alpha$,$25\cos^2\theta + 5\cos\theta - 12 = 0$ का एक मूल है और $\pi/2 < \alpha < \pi$ है,तो $\sin 2\alpha$ का मान क्या होगा:

यदि $\tan A - \tan B = x$ और $\cot A - \cot B = y$ है,तो $\cot (A - B) =$

कथन $(A)$: यदि $\sqrt{4 \sin^4 \theta + \sin^2 2\theta} + 4 \cos^2\left(\frac{\pi}{4} - \frac{\theta}{2}\right) = 2$ है,तो $\theta$ $3^{\text{rd}}$ चतुर्थांश या $4^{\text{th}}$ चतुर्थांश में स्थित है।
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$\frac{\cot A}{1-\tan A}+\frac{\tan A}{1-\cot A} = ?$

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