Question

3 Find the angle which is:
(a) Complement of itself
(b) Supplement of itself
Write the complements of the following angles:
(b) 42
b
(c) 21
(d) 27
(e) 70
5 Write the supplements of the following angles:
(a) 128
(b) 24
(c) 118
(d) 92°
(e) 136​

Answer 1

Answer:

Q3 (a) Complementary angles are angles that add up to 90°

angle that is complement of itself is 45°.

This because when you add 45° to itself, it will give you 90°

(b) Supplementary angles are angles which add up to 180°. The angle which is a supplement to itself is a right angle, or a 90° angle.

Step-by-step explanation:

Q4 : Two angles whose sum is 90° are called complementary angles.

Complement of 42° = 90° − 42° = 48°

Complement of 21° = 90° - 21° = 69°

Complement of 27° = 90° - 27° = 63°

Complement of 70° = 90° - 70° = 20°

Q5 Two angles whose sum is 180° are called supplementary angles.

Supplement of 128° = 180° − 128° = 52°

Supplement of 24° = 180° − 24° = 156°

Supplement of 118° = 180° − 118° = 62°

Supplement of 92° = 180° − 92° = 88°

Supplement of 42° = 180° − 136° = 44°