$\operatorname{cosec} 18^{\circ}$ એ નીચેનામાંથી કયા સમીકરણનું બીજ છે?

  • A
    $x^{2}+2 x-4=0$
  • B
    $4 x^{2}+2 x-1=0$
  • C
    $x^{2}-2 x+4=0$
  • D
    $x^{2}-2 x-4=0$

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Similar Questions

$\operatorname{cosec} 48^{\circ}+\operatorname{cosec} 96^{\circ}+\operatorname{cosec} 192^{\circ}+\operatorname{cosec} 384^{\circ}=$

$0 < \theta < \frac{\pi}{2}$ માટે,$\sum_{m=1}^6 \operatorname{cosec}\left(\theta+\frac{(m-1) \pi}{4}\right) \operatorname{cosec}\left(\theta+\frac{m \pi}{4}\right) = 4 \sqrt{2}$ ના ઉકેલ(ઓ) છે:

જો $\cos A = m \cos B$ હોય,તો

$\sin \frac{\pi}{16} \sin \frac{3 \pi}{16} \sin \frac{5 \pi}{16} \sin \frac{7 \pi}{16}$ ની કિંમત શોધો.

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

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