કિંમત શોધો: $\sqrt{\sin ^4 x+4 \cos ^2 x}-\sqrt{\cos ^4 x+4 \sin ^2 x}$

  • A
    $1-\cos 2 x$
  • B
    $\tan 2 x$
  • C
    $\sin 2 x$
  • D
    $\cos 2 x$

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જો $\tan A$ અને $\tan B$ એ દ્વિઘાત સમીકરણ $x^2-px+q=0$ ના બીજ હોય,તો $\sin^2(A+B)$ ની કિંમત શું થાય?

જો $p = \frac{2\sin \theta}{1 + \cos \theta + \sin \theta}$ અને $q = \frac{\cos \theta}{1 + \sin \theta}$ હોય,તો

$\frac{\sin 1^{\circ}+\sin 2^{\circ}+\ldots+\sin 89^{\circ}}{2(\cos 1^{\circ}+\cos 2^{\circ}+\ldots+\cos 44^{\circ})+1} = $

$2 \sin^2 \beta + 4 \cos(\alpha + \beta) \sin \alpha \sin \beta + \cos 2(\alpha + \beta) = $

પદાવલિ $\tan 9^{\circ}-\tan 27^{\circ}-\tan 63^{\circ}+\tan 81^{\circ}$ ની કિંમત શોધો.

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