જો $A = \sin^2 \theta + \cos^4 \theta$ હોય,તો $\theta$ ની તમામ કિંમતો માટે $A$ કયા અંતરાલમાં આવે છે?

  • A
    $[1, 2]$
  • B
    $[\frac{3}{4}, 1]$
  • C
    $[\frac{1}{2}, \frac{3}{4}]$
  • D
    $[\frac{3}{4}, \frac{19}{16}]$

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$27^{\cos 2x} 81^{\sin 2x}$ ની ન્યૂનતમ કિંમત ....... છે.

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

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

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