यदि $\sin(\theta) + \operatorname{cosec}(\theta) = 2$ है,तो $\sin^{2020}(\theta) + \operatorname{cosec}^{2020}(\theta) = \dots$

  • A
    $2^{2020}$
  • B
    $2020^{2019}$
  • C
    $2^{2019}$
  • D
    $2$

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${\sin ^4}\frac{\pi }{8} + {\sin ^4}\frac{{3\pi }}{8} + {\sin ^4}\frac{{5\pi }}{8} + {\sin ^4}\frac{{7\pi }}{8} = $

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$\tan ^2 \frac{\pi}{16}+\tan ^2 \frac{2 \pi}{16}+\tan ^2 \frac{3 \pi}{16}+\tan ^2 \frac{4 \pi}{16}+\tan ^2 \frac{5 \pi}{16}+\tan ^2 \frac{6 \pi}{16}+\tan ^2 \frac{7 \pi}{16} = ?$

$\frac{\sin^2 3A}{\sin^2 A} - \frac{\cos^2 3A}{\cos^2 A}$ का मान है

माना $S = \{ \theta \in [0, 4\pi] : \tan^2 \theta \neq 1 \}$ और $S = \{ a \in \mathbb{Z} : 2(\cos^8 \theta - \sin^8 \theta) \sec 2\theta = a^2, \theta \in S \}$ है। तो $n(S)$ है:

मान लीजिए $f(x) = \frac{\sin(x-a) + \sin(x+a)}{\cos(x-a) - \cos(x+a)}$,तो

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