If \( P=\left(\tan \left(3^{n+1} \theta\right)-\tan \theta\right) \) and \( Q=\sum_{r=0}^{n} \fr...

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If \( P=\left(\tan \left(3^{n+1} \theta\right)-\tan \theta\right) \) and \( Q=\sum_{r=0}^{n} \frac{\sin \left(3^{r} \theta\right)}{\cos \left(3^{r+1} \theta\right)} \), then
(a) \( P=2 Q \)
(b) \( P=3 Q \)
P
(c) \( 2 P=Q \)
(d) \( 3 P=Q \)
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