CBSE board, NCERT Book, Maths,Ch-6, Ex-6.1
Line's and angles
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Answer:
angle BOD = 40
ANGLE BOD = ANGLE AOC { VERTICAL OPP. ANGLE.
SO THEREFORE,
angle AOC +BOE =70
40 +BOE = 70
BOE= 70-40 = 30
NOW...
angle..AOC + COE+BOE= 180. {LINEAR ANGLE SUM
40 + COE+ 30= 180
COE= 110...
HOPE IT WOULD BE HELPFUL..
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