$\left(1+\frac{1}{\sin ^n \alpha}\right)\left(1+\frac{1}{\cos ^n \alpha}\right)$ का न्यूनतम मान क्या है?

  • A
    $1$
  • B
    $2$
  • C
    $\left(1+2^n\right)^2$
  • D
    $\left(1+2^{n / 2}\right)^2$

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