Question

please answer step by step​

Answer 1

The answer is 30.

Explanation:<COD=<DOB......(given) ...... (1) <AOC+<COB=180 .........(Linear pair of angles) <COB=<COD+<DOB

<AOC+<COD+<DOB=180

<AOC+<COD+<COD=180...... [From(1)]

120 + x + x=180

120 + 2x=180

2x=180-120

2x=60

x=60/2

Answer: x=30..........