Hi, I'm working on some trig questions and can't get the answer for this last question; I have a hunch that it might be one of those obvious ones where you think too much :uhh: ....

PF welcome.
ok, you should really tell us what you have tried.
hint: if [tex]\sin \,x \neq 0[/tex] you can divide through and eliminate the cos and sin... and put them into another trig function.
when sin x =0 then it is simple eh?
(same applies to cos)