જો $\sin(\frac{\pi}{18}) \sin(\frac{5\pi}{18}) \sin(\frac{7\pi}{18}) = K$ હોય, તો $\sin(\frac{10K\pi}{3})$ ની કિંમત શોધો:

  • A
    $\frac{\sqrt{3}+1}{2\sqrt{2}}$
  • B
    $\frac{\sqrt{3}-1}{\sqrt{2}}$
  • C
    $\frac{\sqrt{3}}{2}$
  • D
    $\frac{1}{2}$

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જો $\tan x = \frac{3}{4}$ અને $\pi < x < \frac{3\pi}{2}$ હોય,તો $\sin \frac{x}{2}$,$\cos \frac{x}{2}$ અને $\tan \frac{x}{2}$ ની કિંમત શોધો.

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જો $\sin(x+3\alpha) + 3\sin(x-\alpha) = 0$ હોય,તો

$\frac{\sin \theta + \sin 2\theta}{1 + \cos \theta + \cos 2\theta} = $

$\tan \left( \frac{\pi }{4} + \theta \right) - \tan \left( \frac{\pi }{4} - \theta \right) = $

$\cos \frac{\pi}{2^2} \cdot \cos \frac{\pi}{2^3} \cdot \dots \cdot \cos \frac{\pi}{2^{10}} \cdot \sin \frac{\pi}{2^{10}}$ ની કિંમત શોધો.

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