Q20. In the given figure B, find COD and DOE
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We know that the sum of all the angles in a straight line is 180
o
∠BOC+∠COD+∠AOD=180
o
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x+20+x+x+10=180
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3x+30=180
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3x=150
o
x=50
o
∠COD=50
o
∠AOD=x+10
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=60
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∠BOC=x+20
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=70
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∴ ∠COD=50
o
, ∠AOD=60
o
and ∠BOC=70
o
.
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