AOB is a line and ray OC stands on it.Angle AOC=70°, find Angle COB with proper reason..
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as a line has an angle which is of 180° and if a ray stands on a line the pair made are called linear pair and there summition is of 180°
so AOB is a line
OC stands on AOB
AOC+COB=180°
70+COB=180
COB=110°
so AOB is a line
OC stands on AOB
AOC+COB=180°
70+COB=180
COB=110°
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