$\cot (45^\circ + \theta ) \cot (45^\circ - \theta ) = $

  • A
    $-1$
  • B
    $0$
  • C
    $1$
  • D
    $\infty $

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मान लीजिए $0 < x < \frac{\pi }{4}.$ तब $\sec 2x - \tan 2x = $

यदि $x = a \operatorname{cosec}^{n} \theta$ और $y = b \cot^{n} \theta$ है,तो $\theta$ को विलुप्त करने पर क्या प्राप्त होगा?

$\log \tan 1^{\circ} + \log \tan 2^{\circ} + \log \tan 3^{\circ} + \ldots + \log \tan 89^{\circ}$ का मान किसके बराबर है?

$\tan 9^\circ - \tan 27^\circ - \tan 63^\circ + \tan 81^\circ = $

यदि $x = a \cos^3 \theta$ और $y = b \sin^3 \theta$ है,तो:

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