જો $\alpha$ બીજા ચરણમાં હોય,તો $\sqrt{\frac{1 - \sin \alpha}{1 + \sin \alpha}} - \sqrt{\frac{1 + \sin \alpha}{1 - \sin \alpha}} = $

  • A
    $2 \tan \alpha$
  • B
    $-2 \tan \alpha$
  • C
    $2 \cot \alpha$
  • D
    $-2 \cot \alpha$

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જો $x \cos \theta = y \cos \left(\theta + \frac{2 \pi}{3}\right) = z \cos \left(\theta + \frac{4 \pi}{3}\right)$ હોય,તો $\frac{1}{x} + \frac{1}{y} + \frac{1}{z} = $

$\sin 120^{\circ} \cos 150^{\circ} - \cos 240^{\circ} \sin 330^{\circ}$ ની કિંમત શોધો :

જો $A$ અને $B$ બે ખૂણાઓ એવા હોય કે $A, B \in (0, \pi)$ અને તેઓ પૂરક ખૂણાઓ ન હોય,તથા $\sin A - \sin B = 0$ હોય,તો

$\frac{\sin ^2(-160^{\circ})}{\sin ^2 70^{\circ}} + \frac{\sin (180^{\circ}-\theta)}{\sin \theta} = $

$\frac{\cos 10^{\circ} + \cos 80^{\circ}}{\sin 80^{\circ} - \sin 10^{\circ}} = ?$

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