Structures 1

I need help answering my structures 1 assignment. Can you help? It has to do with trig and a little bit of physics. 

Questions: 

1.  Determine the magnitude of the components parallel and perpendicular to the slope. 

 2. Determine the magnitude and direction of the resultant of the given forces. 

 3. Find the magnitude and direction of a force inclined below the horizontal which will equilibrate the forces shown. Would the system equilibrate if the same force was inclined at 30°  

Thanks, 

Mkay