जब $\frac{\sin 9 \theta}{\cos 27 \theta}+\frac{\sin 3 \theta}{\cos 9 \theta}+\frac{\sin \theta}{\cos 3 \theta}=k(\tan 27 \theta-\tan \theta)$ परिभाषित है,तब $k=$

  • A
    $\frac{\pi}{2}$
  • B
    $-\frac{1}{2}$
  • C
    $\frac{1}{2}$
  • D
    $\frac{\pi}{4}$

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Similar Questions

व्यंजक $\frac{\tan A}{1 - \cot A} + \frac{\cot A}{1 - \tan A}$ को इस प्रकार लिखा जा सकता है:

मान ज्ञात कीजिए: $\cos^2 \left( \frac{\pi}{4} - \beta \right) - \sin^2 \left( \alpha - \frac{\pi}{4} \right)$

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

$\sum_{k=1}^3 \cos^2 \left((2k-1) \frac{\pi}{12}\right)$ का मान ज्ञात कीजिए।

यदि $\sinh x = -\frac{4}{3}$ है,तो $\sinh 2x + \cosh 2x = $

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