We find the third angle C by the fact that the three angles
of any triangle must have sum 180°.

 A  +  B  + C = 180°
36° + 98° + C = 180°  
     134° + C = 180°
            C = 46°

So we fill in angle C as 46°

 

Next we use the law of sines:



We substitute what we know so far:

eq. 1:  

Using the 1st and 3rd expressions of eq. 1:



Cross-multiply:





Guess we'll just round that off to a = 13.1, and fill that in:

 


Using the 2nd and 3rd expressions of eq. 1:



Cross-multiply:





Guess we'll just round that off to b = 22.0  and fill that in:



And now we're done.

Edwin