$\frac{[\sin (y-z)+\sin (y+z)+2 \sin y]}{[\sin (x-z)+\sin (x+z)+2 \sin x]} = ?$ ની કિંમત શું છે?

  • A
    $\cos x \sin y$
  • B
    $\frac{\sin y}{\sin x}$
  • C
    $\sin z$
  • D
    $\sin x \tan y$

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$\sin 12^\circ \sin 48^\circ \sin 54^\circ = $

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$\sin 780^{\circ} \sin 480^{\circ} + \cos 240^{\circ} \cos 300^{\circ}$ નું મૂલ્ય શોધો.

જો $(1 + \sin A)(1 + \sin B)(1 + \sin C) = (1 - \sin A)(1 - \sin B)(1 - \sin C)$ હોય,તો દરેક બાજુ કોના બરાબર થાય?

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