Mathematics
Mathematics, 15.07.2019 07:30, ceelow

Which expression is equivalent to cos(1.4x) - cos(0.6x) a.) -2sinxsin(0.4x) b.) 2sinxsin(0.4x) c.) -2cosxcos(0.4x) d.) 2cosxcox(0.4x)

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Which expression is equivalent to cos(1.4x) - cos(0.6x) a.) -2sinxsin(0.4x) b.) 2sinxsin(0.4x) c.) -...

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