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Express the sum or difference as a product: cos 4x - cos 6x

Express the sum or difference as a product: cos 4x - cos 6x
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Express the sum or difference as a product: cos 4x - cos 6x

User Joergen Bech
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8.1k points

1 Answer

2 votes
Cos -2x or -cos2x, it's the difference.
User Absinthe
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8.3k points
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