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Mathematics, 16.04.2021 18:50 squiddddplop

Express cos6mcos2m as a sum or difference. (1/2)cos4 m - (1/2)cos8 m
(1/2)cos8 m - (1/2)cos4 m
(1/2)cos4 m + (1/2)cos8 m
(1/2)cos4 m + (1/2)cos2 m

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Express cos6mcos2m as a sum or difference. (1/2)cos4 m - (1/2)cos8 m
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