Sorry, forgot to mention the interval. You were right in assuming . What I don't get about this question, though, is exactly how you solve to get those values. Could you explain, please?
...there are two ways you need to solve this ...first way then using the trig identites find the other values(e.g. add )...secondly graph it on your calculator and find the points of intersection between [tex][0,2\pi]]/math]