જો $\sin 10^{\circ} \sin 50^{\circ} \sin 60^{\circ} \sin 70^{\circ} = m$ અને $\tan 20^{\circ} \tan 40^{\circ} \tan 60^{\circ} \tan 80^{\circ} = n$ હોય,તો $\frac{n}{m}$ ની કિંમત શોધો.

  • A
    $\frac{3 \sqrt{3}}{16}$
  • B
    $16 \sqrt{3}$
  • C
    $\frac{16}{\sqrt{3}}$
  • D
    $8 \sqrt{3}$

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જો $x$ અને $y$ લઘુકોણ હોય કે જેથી $\cos x + \cos y = \frac{3}{2}$ અને $\sin x + \sin y = \frac{3}{4}$ થાય,તો $\sin(x + y)$ ની કિંમત શોધો.

જો $2 \cos \theta + \sin \theta = 1$ $\left( \theta \neq \frac{\pi}{2} \right)$ હોય,તો $7 \cos \theta + 6 \sin \theta$ ની કિંમત શોધો.

જો $\cos x + \cos y - \cos (x + y) = \frac{3}{2}$ હોય,તો

જો $\frac{\cos x}{\cos (x-2 y)}=\lambda$ હોય,તો $\tan (x-y) \tan y$ ની કિંમત શું થાય?

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