In the adjoining figure, OD 1 OC. Find
angleAOD + angleCOB.
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AOD=30°
AOD=30°COD=90°
AOD=30°COD=90°COB=X°
AOD=30°COD=90°COB=X°A.T.P.,
AOD=30°COD=90°COB=X°A.T.P.,AOD+COD+COB=180°. (ANGLE SUM PROPERTY OF TRIANGLE)
AOD=30°COD=90°COB=X°A.T.P.,AOD+COD+COB=180°. (ANGLE SUM PROPERTY OF TRIANGLE)30° + 90° + X° = 180°
AOD=30°COD=90°COB=X°A.T.P.,AOD+COD+COB=180°. (ANGLE SUM PROPERTY OF TRIANGLE)30° + 90° + X° = 180°120° + X° = 180°
AOD=30°COD=90°COB=X°A.T.P.,AOD+COD+COB=180°. (ANGLE SUM PROPERTY OF TRIANGLE)30° + 90° + X° = 180°120° + X° = 180°X° = 180° - 120°
AOD=30°COD=90°COB=X°A.T.P.,AOD+COD+COB=180°. (ANGLE SUM PROPERTY OF TRIANGLE)30° + 90° + X° = 180°120° + X° = 180°X° = 180° - 120°X° = 60°
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