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OpenStudy (anonymous):

cos(x)+sin(x)tan(x)=1/cos(X)... solve as an identity?

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OpenStudy (anonymous):

sec(x)!=0 and X = 2 pi n-cos^(-1)(cos(x)) and n element Z sec(x)!=0 and X = 2 pi n+cos^(-1)(cos(x)) and n element Z

OpenStudy (anonymous):

im not sure i understand some of these terms... doesnt seem to be what i was looking for...

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