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Mathematics, 10.03.2021 16:20 julih74

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W. If k is an integer which satisfies 2 sin^2(x) +10 cos^2(x/2) = 7-2k, then k=?

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W. If k is an integer which satisfies 2 sin^2(x) +10 cos^2(x/2) = 7-2k, then k=?...

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