Answer:
Part a) The complementary angle is 

Part b) The supplementary angle is 

Explanation:
Part A) Complementary angles
we know that
If two angles are complementary, then its sum is equal to 90 degrees
Let
x------> the complementary angle 

Solve for m<x

Part B) Supplementary angles
we know that
If two angles are supplementary, then its sum is equal to 180 degrees
Let
x------> the supplementary angle 

Solve for m<x
