Question

find all angles
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Answer 1

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COE=60°,DOF= 60°,AOF = 30°,DOB=90° and AOC=90°

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• angle COE= angle DOF (vertically opposite angles)
• angle DOF+ angle AOF= 90°=>60 +AOF=90=>AOF =90-60=30°
• Angle AOF = angle EOB (vertically opposite angles)
• AOF +DOF+DOB=180°=>30+60 +DOB=180=>DOB=180-90=90°
• DOB=AOC ( vertically opposite angles)

hope it helps... :)