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lepaku
@lepaku
July 2022
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спростіть вираз cos 8a cos2a-sin8a sin2a
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Санечка69
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Cos8α cos2α - sin8α sin2α = cos(8α + 2α) = cos10α
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Verified answer
Cos8α cos2α - sin8α sin2α = cos(8α + 2α) = cos10α