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OpenStudy (anonymous):
I'm having a hard time understanding why u=2-cos pi , u=3
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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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