શરતો $0 \leq \alpha_1, \alpha_2, \ldots, \alpha_n \leq \frac{\pi}{2}$ અને $(\cot \alpha_1) \cdot (\cot \alpha_2) \ldots (\cot \alpha_n) = 1$ હેઠળ $(\cos \alpha_1) \cdot (\cos \alpha_2) \ldots (\cos \alpha_n)$ નું મહત્તમ મૂલ્ય શું છે?

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

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