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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$\operatorname{cosec} 2 \theta - \cot 2 \theta = ?$

$\cot 7\frac{1}{2}^{\circ} + \tan 67\frac{1}{2}^{\circ} - \cot 67\frac{1}{2}^{\circ} - \tan 7\frac{1}{2}^{\circ}$ ની કિંમત છે:

$\cot \frac{\pi}{24}$ નું મૂલ્ય શું છે?

જો $\sin x + \cos x = \frac{1}{5}$ હોય,તો $\tan 2x$ ની કિંમત શોધો.

જો $\tan A = \frac{1}{2}$ અને $\tan B = \frac{1}{3}$ હોય,તો $\tan (A + 2B)$ ની કિંમત શોધો.

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