જો $\cos \theta = \frac{\cos \alpha - \cos \beta}{1 - \cos \alpha \cos \beta}$ હોય,તો $\tan \frac{\theta}{2}$ ની એક કિંમત શું થાય?

  • A
    $\cot \frac{\beta}{2} \tan \frac{\alpha}{2}$
  • B
    $\tan \alpha \tan \frac{\beta}{2}$
  • C
    $\tan \frac{\beta}{2} \cot \frac{\alpha}{2}$
  • D
    $\tan ^2 \frac{\alpha}{2} \tan ^2 \frac{\beta}{2}$

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જો $\cos x - \sin x = \sqrt{a} \sin x$ હોય,તો $a \sin x + \cos x - \sin x = $

જો $\sin 2\theta + \sin 2\phi = 1/2$ અને $\cos 2\theta + \cos 2\phi = 3/2$ હોય,તો $\cos^2(\theta - \phi) = $

જો $y = (1 + \tan A)(1 - \tan B)$ જ્યાં $A - B = \frac{\pi}{4}$ હોય,તો $(y + 1)^{y + 1}$ ની કિંમત શોધો.

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જો $\tan x = \frac{b}{a}$ હોય,તો $\sqrt{\frac{a + b}{a - b}} + \sqrt{\frac{a - b}{a + b}} = $

કિંમત શોધો: $\sin \frac{\pi}{12} \sin \frac{2 \pi}{12} \sin \frac{3 \pi}{12} \sin \frac{4 \pi}{12} \sin \frac{5 \pi}{12} \sin \frac{6 \pi}{12}$

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