Question

in fig 8 ,OD perpendicular to oc. find angle AOD + angle COB
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Answer 1

Given: OD perpendicular to OC.

To find: The value of angle AOD + angle COB

Solution:

• Now we have given a OD perpendicular to OC, so:

                 ∠DOC = 90°

• Now:

                 ∠AOD + ∠DOC + ∠COB = 180° ...............(linear pair)

                 ∠AOD + 90° + ∠COB = 180°

                 ∠AOD + ∠COB = 180° - 90°

                 ∠AOD + ∠COB = 90°

Answer:

                So the value of ∠AOD + ∠COB is 90°.

Answer 2

Answer:

90 is the answer to this question

Hope it helps you