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table \cos (\frac{4\pi/3+2k\pi}{8})+i\cdot \sin (\frac{4\pi/3+2k\pi}{8}), k=0 to 7
table \cos (\frac{4\pi/3+2k\pi}{8})+i\cdot \sin (\frac{4\pi/3+2k\pi}{8}), k=0 to 7
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