If a ray OC stands on line AB such that angle AOC=angle COB ,show that angle AOC=90°
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angle COB+angleAOC=180°asAB is a line and OC stands on it, (through linear pair.)
asAOC=COB,
so, AOC+AOC=180°
2AOC=180°
AOC=180\2
AOC=90°
asAOC=COB,
so, AOC+AOC=180°
2AOC=180°
AOC=180\2
AOC=90°
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