posted by minh .
1st-the reason i keep change my name because some of my friends are using my computer by their own name to asked questions. we are having a hard time solving each trig problems
2nd- if sin theta=0.6 and 90 degree <theta < 180 degree, find the exact value of sin 2 theta.
sin theta=.6 >>> theta= arc sin .6=36.86or 90-36.86