Answer
$ y^{\circ}$ may be any finite angle.
Complement of $y^{\circ}$ = $ 90^{\circ} - y^{\circ}$
Supplement of $ y^{\circ}$ = $ 180^{\circ} - y^{\circ}$
Work Step by Step
$ y^{\circ}$ may be any finite angle.
Complement of $ y^{\circ}$ = $ 90^{\circ} -y^{\circ}$
(As sum of the measures of complementary angles is 90 degrees, we can find 'one' by subtracting 'other' from $90^{\circ}$ )
Supplement of $ y^{\circ}$ = $ 180^{\circ} -y^{\circ}$
(As sum of the measures of supplementary angles is 180 degrees, we can find 'one' by subtracting 'other' from $180^{\circ}$)
