Question

Need answers ASAP

In the figure shown, which pair of angles must be complementary?


​
∠AOC
​ and ​
∠DOB
​

∠AOC
​ and
∠COD

​
∠COB
​ and
∠AOC

∠COD
and
∠DOB

Answer 1

complement sum of the angles = 90
so
∠COD + ∠DOB = 90

answer is
∠COD
and
∠DOB (last choice)

Answer 2

∠COD and ∠DOB are complementary angles .

Explanation:

Definition of Complementary angles

Two angles whose sum is equal to 90 degree is called complementary angles .

As the figure given in the question .

Clearly

∠COD + ∠BOD = 90°

Therefore ∠COD and ∠DOB are complementary angles .