Hello! Your answer is 7 degrees.
A set of complementary angles are ones which, when their measurements are added, will equal up to 90 degrees. For example, the complementary angle of a 80 degree angle would be 10 degrees. A supplementary angle also falls in the same category, however it is adding up to 180 degrees. The way I remember which one is which is that c comes first in the alphabet, and 90 degrees comes before 180 degrees.
Applying that knowledge, 83 plus the complementary angle must equal 90. 83 + 7 = 90, therefore, the complementary angle measures 7 degrees.
Hope this helps!
