यदि $\theta = \frac{\pi}{9}$ है,तो $1 + 27 \tan^2 \theta - 33 \tan^4 \theta + \tan^6 \theta = $

  • A
    $3$
  • B
    $4$
  • C
    $-3$
  • D
    $-11$

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यदि $\sin 6\theta = 32\cos^5\theta \sin\theta - 32\cos^3\theta \sin\theta + 3x$ है,तो $x = $

मान ज्ञात कीजिए: $\cos \frac{\pi}{5} \cos \frac{2\pi}{5} \cos \frac{4\pi}{5} \cos \frac{8\pi}{5}$

$\frac{\sin 5 \theta}{\sin \theta}$ किसके बराबर है?

$\cos ^3 \theta + \cos ^3(120^{\circ} + \theta) + \cos ^3(\theta - 120^{\circ}) = $

$cot 5^o - tan 5^o - 2 tan 10^o - 4 tan 20^o - 8 cot 40^o$ का मान ज्ञात कीजिए।

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