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Mathematics, 27.10.2020 19:00 wwall7

Which expression is equivalent to 2cos2(StartFraction x Over 2 EndFraction) minus cosine (x)?

Which expression is equivalent to 2cos2(StartFraction x Over 2 EndFraction) minus cosine (x)?

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Which expression is equivalent to 2cos2(StartFraction x Over 2 EndFraction) minus cosine (x)?
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