Trig AS maths question

Hey can someone help me with this trig question: tan2x=3 for -180>x>180?

Sure, answers are ...

Its best to give a hint rather than a solution, and its not quite right.

Sorry, I am aware it's better to give hints, hence why I edited to add an explanation
However I thought it may help to have an answer to compare with incase they no longer have access to the answer
Also in what way is it not quite right?

No problem. Just plot the trig function, you should be able to spot it / think why its not 2 solutions / ...