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OpenStudy (ttop0816):
select the best answer! am i correct?? cos( 3pi/2+ x) sinx <<< i chose this! -cosx -sinx cosx
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OpenStudy (anonymous):
sin(x) is correct
OpenStudy (ttop0816):
how about for this one?? root1-sin^2x/tan^2x+1?? is it cos^2x??
OpenStudy (anonymous):
im not sure about that one sorry
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