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Mathematics 8 Online
OpenStudy (anonymous):

I'm having a hard time understanding why u=2-cos pi , u=3

OpenStudy (anonymous):

\[u=2-\cos \pi, u=3\]

OpenStudy (anonymous):

cos pi is -1 and 2-(-1)=3

OpenStudy (anonymous):

wow thanks ! I dont know why i was having such a hard time understand that concept

OpenStudy (anonymous):

your welcome. trig is tricky

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