$x$ (અંશમાં) ની સૌથી નાની ધન કિંમત શોધો જેના માટે $\tan(x+100^{\circ}) = \tan(x+50^{\circ}) \tan(x) \tan(x-50^{\circ})$ થાય. ($^{\circ}$ માં)

  • A
    $15$
  • B
    $22.5$
  • C
    $75$
  • D
    $30$

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જો $0 \leq \theta \leq 2 \pi$,$0 \leq \alpha \leq 2 \pi$ અને $\sec ^{2018} \theta + \operatorname{cosec}^{2018} \alpha = 2$ હોય,તો $\cos ^{2020} \theta + \sin ^{2022} \alpha$ ની કિંમત શોધો.

જો $\theta$ ત્રીજા ચરણમાં હોય,તો $\sqrt{4 \sin ^4 \theta+\sin ^2 2 \theta}+4 \cos ^2\left(\frac{\pi}{4}-\frac{\theta}{2}\right)=$

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

$\frac{\cos 12^\circ - \sin 12^\circ}{\cos 12^\circ + \sin 12^\circ} + \frac{\sin 147^\circ}{\cos 147^\circ} = $

$\frac{1+\cos \theta-\sin \theta}{1+\cos \theta+\sin \theta}+\frac{1+\cos \theta+\sin \theta}{1+\cos \theta-\sin \theta}=$

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