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OpenStudy (anonymous):
cos(-1710)=?
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OpenStudy (anonymous):
cos(-1710) = cos(1710) = cos(9pie + 90o) = cos 90o = 0
OpenStudy (anonymous):
cos(-x) =cosx
mathslover (mathslover):
RIGHT YAHOO !!
OpenStudy (anonymous):
hey it is an odd multiple so cos will be sin
OpenStudy (anonymous):
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