Question

Please explain me step by step ​

Answer 1

Answer:

a) it is given that angle AOC =30°

hence, by the property of vertically opposite angle

Angle AOC=Angle DOB

So angle DOB =30°

Given AB and CD are lines

So, Angle AOD + Angle DOB = 180°

Angle AOD + 30°=180°

Angle AOD= 180°-30°

Angle AOD= 150°

and again by the property of vertically opposite angle Angle AOD=Angle COB

I HOPE IT HELPS YOU ✌️

Answer 2

Answer:

here is your answer

we know that angle AOC and angle DOB (VERTICALLY OPPOSITE ANGELES) AND angle DOA and angle COB (VERTICALLY OPPOSITE ANGELES)