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Mathematics, 15.06.2021 23:50 prettyluhangel

HELPPP FAST PLS Select the correct answer. Which expression is equivalent to cos(4x) + cos(2x)?
O A. 2cos(3x)cos e
OB. -2sin(3x)sint
OC. 2sin(3x)sins
OD. -2cos(3x)cost

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HELPPP FAST PLS Select the correct answer. Which expression is equivalent to cos(4x) + cos(2x)?
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