carlossggregorio18 carlossggregorio18 10-05-2021 Mathematics contestada Use the square identities to simplify 2 cos^2 x cos^2 x a.(3-4cos(2x)-cos(4x))/(4) b.(3+4cos(2x)+cos(4x))/(4) c.(3+4cos(2x)-cos(4x))/(4) d.(3-4cos(2x)+cos(4x))/(4)
