Construct one triangle that refers to and one that refers to .

Since is in quadrant II, we let the side opposite the angle have length 7 and the side adjacent to the angle have length -24

So that means that the hypotenuse of our triangle will have length

Therefore, we can conclude that and .

Does this make sense so far?

You should do something similar for .

Then once you have a right triangle, it is easy to find , and the like.

If this doesn't make sense, post back. To help it sink in, try to draw the triangle I described to you above.