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Mathematics, 25.04.2020 20:46 marykm03p3sd80

Show that cos(3x) = cos(x) - 4sin^2(x)cos(x) is an identity.

Which identities or properties were used?

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Show that cos(3x) = cos(x) - 4sin^2(x)cos(x) is an identity.

Which identities or propert...

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