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

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

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જો $\sqrt x + \frac{1}{{\sqrt x }} = 2\cos \theta$ હોય,તો ${x^6} + {x^{ - 6}} = $

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જો $x$ વાસ્તવિક હોય અને $x+\frac{1}{x}=2 \cos \theta$ હોય,તો $\cos \theta=$

વાસ્તવિક કિંમતો $\theta$ માટે $\cos 2\theta + \cos \theta$ ની ન્યૂનતમ કિંમત શું છે?

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

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