જો $\alpha = \sin 36^{\circ}$ હોય,તો $\alpha$ નીચેનામાંથી કયા સમીકરણનું બીજ છે?

  • A
    $10 x^{4}-10 x^{2}-5=0$
  • B
    $16 x^{4}+20 x^{2}-5=0$
  • C
    $16 x^{4}-20 x^{2}+5=0$
  • D
    $16 x^{4}-10 x^{2}+5=0$

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Similar Questions

$\tan \alpha + 2 \tan 2 \alpha + 4 \tan 4 \alpha + 8 \cot 8 \alpha = $

જો $\sin \alpha = \frac{-3}{5}$ જ્યાં $\pi < \alpha < \frac{3\pi}{2}$ હોય,તો $\cos \frac{\alpha}{2} = $

જો $k = \sin \frac{\pi}{18} \cdot \sin \frac{5\pi}{18} \cdot \sin \frac{7\pi}{18}$ હોય,તો $k$ નું આંકડાકીય મૂલ્ય શું છે?

જો $\sin x - \sin y = \frac{1}{2}$ અને $\cos x - \cos y = 1$ હોય,તો $\tan(x + y)$ ની કિંમત શોધો.

જો $x = \log_e \left[ \cot \left( \frac{\pi}{4} + \theta \right) \right]$ જ્યાં $|\theta| < \frac{\pi}{4}$ હોય,તો $\sinh x =$

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