the questions is to find all possible measures of angle $\displaystyle \theta$ if $\displaystyle 0\leq\theta\leq360^o$

$\displaystyle sin\theta= - 1/\sqrt2$

and

$\displaystyle tan\theta = -1$

I know they are both in the 4th quadrant and in that quadrant sin and tan are both negative, but where do i go from there?

What is the rules and steps to solve other problems similar to this?