જો $\tan \theta = \frac{1}{3}$ હોય,તો $\cos 2 \theta = $

  • A
    $\frac{1}{4}$
  • B
    $\frac{1}{10}$
  • C
    $\frac{1}{5}$
  • D
    $\frac{4}{5}$

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જો $\theta$ લઘુકોણ હોય અને $\sin \frac{\theta}{2} = \sqrt{\frac{x - 1}{2x}}$ હોય,તો $\tan \theta$ ની કિંમત શોધો.

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$3 \tan^6 10^{\circ} - 27 \tan^4 10^{\circ} + 33 \tan^2 10^{\circ} = $

જો $\cos A = \frac{3}{4}$ હોય,તો $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right) = $

જો $540^{\circ} < A < 630^{\circ}$ અને $|\cos A| = \frac{5}{13}$ હોય,તો $\tan \frac{A}{2} \tan A = $

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