Plug this into your calculator:
[math]log_2(\frac{1}{sin(\frac{\pi}{22})sin(3\frac{\pi}{22})sin(5\frac{\pi}{22})sin(7\frac{\pi}{22})sin(9\frac{\pi}{22})sin(11\frac{\pi}{22})})=5 \tag{1}[/math]
Here's another equation, but you may need a special calculator for it due to the imaginary component:
[math]n^{-1}log_{e^{\frac{1}{5}(2i)\pi}}(1)=5 \tag{2}[/math]
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