Nothing to verify because you did not say what they are.

You want to know them?

Complement angle of 20 deg is 70 deg. ---answer.

Complementary angles are 90 degrees.

Supplement angle of 3pi/5 is

2pi -3pi/5 = (10pi -3pi)/5 = 7pi/5 ---answer.

Supplementary angles are 2pi radians.