If sin(x) = negative one-third and cos(x) > 0, what is tan(2x)? negative startfraction 4 startroot 2 endroot over 7 endfraction negative startfraction 4 startroot 2 endroot over 9 endfraction startfraction 4 startroot 2 endroot over 9 endfraction startfraction 4 startroot 2 endroot over 7 endfraction
