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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)
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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)

User Dhagz
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7 votes

Answer:

D

Explanation:

User Lobsang
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