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Mathematics 9 Online
OpenStudy (anonymous):

What is the domain of y = cos x ? A. negative 1 is less than or equal to x is less than or equal to 1 B. x is less than or equal to zero C. x is greater than or equal to zero D. all real numbers

OpenStudy (anonymous):

-1<=y<=1 x is all real numbers =>D

OpenStudy (anonymous):

thanks

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