Mathematics, 02.12.2021 23:20 zeesharpe05
If $1 \cos^2 \theta \cos^4 \theta \cos^6\theta \cdots = 5,$ what is the value of $\cos2\theta$?.
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If $1 \cos^2 \theta \cos^4 \theta \cos^6\theta \cdots = 5,$ what is the value of $\cos2\theta$?....
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