જો $\cos x + \cos y + \cos \alpha = 0$ અને $\sin x + \sin y + \sin \alpha = 0$ હોય,તો $\cot \left( \frac{x + y}{2} \right) = $

  • A
    $\sin \alpha $
  • B
    $\cos \alpha $
  • C
    $\cot \alpha $
  • D
    $\sin \left( \frac{x + y}{2} \right)$

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જો $\cos \theta = \frac{1}{2}\left( x + \frac{1}{x} \right)$ હોય,તો $\frac{1}{2}\left( x^2 + \frac{1}{x^2} \right) = $

$\tan 100^\circ + \tan 125^\circ + \tan 100^\circ \tan 125^\circ = $

જો $\tan 80^{\circ} = a$ અને $\tan 47^{\circ} = b$ હોય,તો $\tan 37^{\circ}$ ની કિંમત કેટલી થાય?

જો $3\cos \theta + 4\sin \theta = 5$ હોય,તો $3\sin \theta - 4\cos \theta$ ની કિંમત શોધો.

$\sin ^4 \frac{\pi}{8} + \sin ^4 \frac{3\pi}{8} + \sin ^4 \frac{5\pi}{8} + \sin ^4 \frac{7\pi}{8} = $

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