The measure of its supplement is (180 + 4y)°. Complementary angles are angles that add up to 90 degrees. Supplementary angles are angles that add up to 180 degrees.
. Option A is correct.
How do we explain?
Supplementary angles are two angles that add up to 180 degrees. To find the supplement of an angle, we subtract the measure of the angle from 180 degrees. In other words, if the measure of an angle is x degrees, then its supplement is (180 - x) degrees.
The measure of the angle is 4y degrees. Therefore, its supplement is (180 - 4y) degrees.
complete question:
The measure of an angle is 4y°. Find the measure of its supplement.
And my options are
a
(180 - 4y)°
b
(90 - 4y)°
c
(90 + 4y)°
d
(180 + 4y)°