यदि $\sin x + \text{cosec } x = 2$ है,तो $\sin^n x + \text{cosec}^n x$ का मान क्या होगा?

  • A
    $2$
  • B
    $2^n$
  • C
    $2^{n-1}$
  • D
    $2^{n-2}$

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