to keep negative it has to stay in Q3 or Q4
however once goes into Q4 (-)(+) then the goes negative
so that leaves just Q3 (-)(-)
In which quadrant must theta lie if it satisfies the following inequalities:
sin(theta)<0, sin(theta)cos(theta)>0
I'm at a loss as to how to solve this. Could someone please push me in the right direction?
Thank you!