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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मान लीजिए $S$ उन सभी $\alpha \in \mathbb{R}$ का समुच्चय है जिनके लिए समीकरण $\cos 2x + \alpha \sin x = 2\alpha - 7$ का एक हल है। तो $S$ किसके बराबर है?

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