જો $5 \cos \theta + 12 \sin \theta = 13$ હોય,તો $\tan \theta = ?$

  • A
    $\frac{13}{12}$
  • B
    $\frac{12}{13}$
  • C
    $\frac{12}{5}$
  • D
    $\frac{5}{12}$

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જો $\alpha$ એ $25\cos^2\theta + 5\cos\theta - 12 = 0$ નું બીજ હોય અને $\pi/2 < \alpha < \pi$ હોય,તો $\sin 2\alpha$ ની કિંમત શોધો.

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