यदि $\tan \theta + \cot \theta = 2$ है,तो $\sin \theta =$

  • A
    $\pm \frac{1}{2}$
  • B
    $\frac{1}{\sqrt{2}}$
  • C
    $\pm \frac{1}{3}$
  • D
    इनमें से कोई नहीं

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यदि $\tan \theta = \frac{1}{\sqrt{11}}$ और $0 < \theta < \frac{\pi}{2}$ है,तो $\frac{\operatorname{cosec}^{2} \theta - \sec ^{2} \theta}{\operatorname{cosec}^{2} \theta + \sec ^{2} \theta}$ का मान ज्ञात कीजिए।

यदि $\tan^2 \theta = 2\tan^2 \phi + 1$ है,तो $\cos 2\theta + \sin^2 \phi$ का मान क्या होगा?

मान ज्ञात कीजिए: $\tan A + \cot (180^\circ + A) + \cot (90^\circ + A) + \cot (360^\circ - A)$

$\cos \frac{2\pi}{15} \cos \frac{4\pi}{15} \cos \frac{8\pi}{15} \cos \frac{16\pi}{15} = $

यदि $A + C = B$ है,तो $\tan A \tan B \tan C = $

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