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Mathematics 7 Online
OpenStudy (anonymous):

Which graph represents a phase shift of pi/2 units right for the graph of y=cosx? A. Sin x B. Csc x C. Cos (x+ pi/2) D. Sec x

OpenStudy (anonymous):

sin x= cos(x- pi/2) so, option A. sin x

OpenStudy (sweetburger):

Co-Function identities ftw

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