Question 33126
For this problem, you'll have to use this sine rule.  

Sine rule is this: a/sinA=b/sinB=c/sinC.  You can pick whichever sides to use you would like.
So in this problem, use a/sinA, or 20/sin41 and then use your right angle and the side opposite the right angle- usually c.  

20/sin41=c/sin90
30.49=c/1
30.49=c