જો $f(x) = \frac{\cos^2 x + \sin^4 x}{\sin^2 x + \cos^4 x}$ તમામ $x \in R$ માટે હોય,તો $f(2023) = $

  • A
    $1$
  • B
    $0$
  • C
    $2$
  • D
    $\pi$

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જો $\frac{\sqrt{2} \sin \alpha}{\sqrt{1+\cos 2 \alpha}}=\frac{1}{7}$ અને $\sqrt{\frac{1-\cos 2 \beta}{2}}=\frac{1}{\sqrt{10}}$ જ્યાં $\alpha, \beta \in (0, \frac{\pi}{2})$,તો $\tan (\alpha+2 \beta)$ ની કિંમત શોધો.

વિધાન $(S1): \sin 55^{\circ} + \sin 53^{\circ} - \sin 19^{\circ} - \sin 17^{\circ} = \cos 2^{\circ}$.
વિધાન $(S2): \frac{1}{3 - \cos 2x}$ નો વિસ્તાર $\left[\frac{1}{4}, \frac{1}{2}\right]$ છે.
નીચેનામાંથી કયું સાચું છે?

ધારો કે $\theta, \phi \in [0, 2\pi]$ એવા છે કે $2 \cos \theta(1-\sin \phi) = \sin^2 \theta \left(\tan \frac{\theta}{2} + \cot \frac{\theta}{2}\right) \cos \phi - 1$,$\tan (2\pi - \theta) > 0$ અને $-1 < \sin \theta < -\frac{\sqrt{3}}{2}$. તો $\phi$ કઈ શરતનું પાલન કરી શકતું નથી?

જો $x: y: z = \tan \left(\frac{\pi}{15}+\alpha\right): \tan \left(\frac{\pi}{15}+\beta\right): \tan \left(\frac{\pi}{15}+\gamma\right)$ હોય,તો $\frac{z+x}{z-x} \sin ^2(\gamma-\alpha)+\frac{x+y}{x-y} \sin ^2(\alpha-\beta)+\frac{y+z}{y-z} \sin ^2(\beta-\gamma)$ ની કિંમત શોધો.

કિંમત શોધો: $\sin ^2 18^{\circ}+\sin ^2 24^{\circ}+\sin ^2 36^{\circ}+\sin ^2 42^{\circ}+\sin ^2 78^{\circ}+\sin ^2 90^{\circ}+\sin ^2 96^{\circ}+\sin ^2 102^{\circ}+\sin ^2 138^{\circ}+\sin ^2 162^{\circ}$

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