



 
Stephanie, Call then A and B. Supplementary means A+B = 180 degrees. Now write the other condition "A is 30 degrees more than twice B" as an algebraic equation. Now use the second equation to rewrite the first one without A. Now solve the new equation for B. Now find A and the complement of A. ("Complement" means the two angles add to 90 degrees.) Good Hunting!
 


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 