AB and CD are two equal chords of a circle with centre O such that angle AOB = 80°, then angle DCO = ____.
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Answer:
50 degrees
Step-by-step explanation:
Equal chords of a circle subtend equal angles at the centre therefore AOB = DOC
DOC = 80 degrees
DCO = CDO ( isoceles triangle property )
2x = 100
X = 50
DCO = 50 degrees
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