The number of elements in the set \( S=\left\{\theta \in[-4 \pi, 4 \pi]: 3 \cos ^{2} 2 \theta+6 ... VIDEO
The number of elements in the set \( S=\left\{\theta \in[-4 \pi, 4 \pi]: 3 \cos ^{2} 2 \theta+6 \cos 2 \theta-10 \cos ^{2} \theta+5=0\right. \) ishttps://bit.ly/YTAI_PWAP https://www.pw.live
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