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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$5 \tan^2 \alpha + \frac{9}{\tan^2 \alpha} + 4 \sec^2 \alpha$ ની ન્યૂનતમ કિંમત શોધો.

જો $A = \sin^2 \theta + \cos^4 \theta$ હોય,તો $\theta$ ની તમામ વાસ્તવિક કિંમતો માટે:

જો $x \in (0, \frac{\pi}{4})$ હોય,તો પદાવલિ $\frac{\cos x}{\sin^2 x(\cos x - \sin x)}$ કઈ કિંમત ધારણ કરી શકે નહીં?

જો $A + B + C = 180^o$ હોય,તો $\sum \tan \frac{A}{2} \tan \frac{B}{2} = $

જો $\cos \left( \frac{\alpha - \beta}{2} \right) = 2\cos \left( \frac{\alpha + \beta}{2} \right)$ આપેલ હોય,તો $\tan \frac{\alpha}{2} \tan \frac{\beta}{2}$ ની કિંમત શોધો.

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