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In the following figure, O is the centre of the circle. AB and CD are equal chords. If `angle AOB=100^@` , Find the `angle CED`. |
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Answer» Equal chords subtend equal angles at the centre of the circle. `angle =100^@` `rArr angle DOC =100^@` (Angle subtended by an arc at the circle is twice the angle subtended by it anywhere in the remaining part of the circle ). `therefore angleDEC=(1)/(2)(100^@)=50^@`. |
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