यदि $\operatorname{cosec} \theta - \sin \theta = m$ और $\sec \theta - \cos \theta = n$ है,तो $(m^2 n)^{2/3} + (m n^2)^{2/3} = $

  • A
    $-1$
  • B
    $1$
  • C
    $0$
  • D
    इनमें से कोई नहीं

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यदि $\sin \theta = \frac{1}{2} \left( \sqrt{\frac{x}{y}} + \sqrt{\frac{y}{x}} \right)$,जहाँ $x, y \in R - \{0\}$ है,तो:

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