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Mathematics 7 Online
OpenStudy (anonymous):

cos(4x)=1/2

OpenStudy (shamil98):

cos(4x) = 1/2 4x = cos^-1 (1/2) do the rest.

OpenStudy (anonymous):

would i multiply both sides by 2 from here?

OpenStudy (shamil98):

no you evaluate the inverse of cosine (1/2) then divide both sides by 4 to get x.

OpenStudy (anonymous):

thank you

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