Mathematics

Mathematics, 19.10.2019 19:30, edjiejwi

1+cos(18x)=
a. 2cos^2(9x)
b. 2sin^2(9x)
c. 2cos^2(18x)
d.2sin^2(18x)

answer

Answers: 2

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Do you know the correct answer?

1+cos(18x)=
a. 2cos^2(9x)
b. 2sin^2(9x)
c. 2cos^2(18x)
d.2sin^2(18x)...

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