$(4 \cos^2 9^{\circ} - 3)(4 \cos^2 27^{\circ} - 3) = $

  • A
    $\tan 9^{\circ}$
  • B
    $\tan 27^{\circ}$
  • C
    $\tan 81^{\circ}$
  • D
    $\tan 63^{\circ}$

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જો $\sin 6 \theta = 32 \cos^5 \theta \sin \theta - 32 \cos^3 \theta \sin \theta + 3x$ હોય,તો $x$ ની કિંમત શોધો:

$\tan A + 2 \tan 2A + 4 \tan 4A + 8 \cot 8A = $

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$\cot 5^o - \tan 5^o - 2 \tan 10^o - 4 \tan 20^o - 8 \cot 40^o$ ની કિંમત શોધો.

જો $\cos \theta = \frac{-3}{5}$ અને $\theta$ બીજા ચરણમાં ન હોય,તો $\tan \frac{\theta}{2} = $

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