જો $\cos 3\theta = \alpha \cos \theta + \beta \cos^3 \theta$ હોય,તો $(\alpha, \beta) = $

  • A
    $(3, 4)$
  • B
    $(4, 3)$
  • C
    $(-3, 4)$
  • D
    $(3, -4)$

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જો $\theta$ બીજા ચરણમાં ન હોય અને $\tan \theta = \frac{-3}{4}$ હોય,તો $\tan \frac{\theta}{2} + \sin 2 \theta =$

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