यदि $\text{cosec } A + \cot A = \frac{11}{2}$ है,तो $\tan A = $

  • A
    $\frac{21}{22}$
  • B
    $\frac{15}{16}$
  • C
    $\frac{44}{117}$
  • D
    $\frac{117}{43}$

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गुणनफल का मान ज्ञात कीजिए: $\left(1+\cos \frac{\pi}{8}\right)\left(1+\cos \frac{2 \pi}{8}\right)\left(1+\cos \frac{3 \pi}{8}\right)\left(1+\cos \frac{4 \pi}{8}\right)\left(1+\cos \frac{5 \pi}{8}\right)\left(1+\cos \frac{6 \pi}{8}\right)\left(1+\cos \frac{7 \pi}{8}\right)$

यदि $x=\frac{\sin^3 \theta}{\cos^2 \theta}$ और $y=\frac{\cos^3 \theta}{\sin^2 \theta}$ है,जहाँ $\sin \theta+\cos \theta=\frac{1}{2}$ है,तो $x+y=$

$\frac{1}{\sin 1^{\circ} \sin 2^{\circ}}+\frac{1}{\sin 2^{\circ} \sin 3^{\circ}}+\ldots+\frac{1}{\sin 89^{\circ} \sin 90^{\circ}} = $

व्यंजक $2 \cos \frac{\pi}{13} \cos \frac{9\pi}{13} + \cos \frac{3\pi}{13} + \cos \frac{5\pi}{13}$ का मान क्या है?

$\operatorname{Sech}^{-1}(\sin \alpha) =$

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