2.  This piece has a 60 degree included angle.  Calculate the unknown length.

Solution: 

step 1. find the triangle

step 2.  label the known and needed         

step 3.  select the trig rule – use TAN

step 4. TAN  = opp / adj

step 5. tan 30  = 1.0625 / adj

           adj = 1.8403