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Mathematics 19 Online
OpenStudy (anonymous):

If f(x)=cos(x) and x= -2pi then what is cos (x)?

OpenStudy (cwrw238):

cos (-2pi) = cos 0

OpenStudy (cwrw238):

ans whats the value of cos 0?

OpenStudy (anonymous):

ooooh ooooh i know this......! !

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