OB is perpendicular to OA. Find angle AOD
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HELLO....
Your answer....
Angle BOA = 90° ....(given)
Angle BOC = 49°
let angle BOD be x
Therefore,
x + 49° = 180° ....... (angles in linear pair)
x = 180° - 49°
x = 131°
Let angle DOA be y
Therefore,
Angle BOA + Angle BOD + Angle DOA = 360° (as they complete a whole circle)
90° + 131° + y = 360°
221° + y = 360°
y = 360° - 221°
y = 139°
Therefore angle AOD = 139°
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ANSWER BY MANAS817
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