Question 419627
 def and abc are complementary angles and abc is three times as large as def. 
determine the measure of each angles.
Let x = angle abc
then it's complement, def = (90-x)
:
it says,"abc is three times as large as def. ", therefore
x = 3(90-x)
x = 270 - 3x
x + 3x = 270
now you should be able to solve this