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:

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $3$

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