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If the ratio of length of two chords...

If the ratio of length of two chords PQ and RS of the circle with centre at O be 1 : 1 then `angle POQ : angle ROS ` = _________.

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1:1 , since PQ : RS =` 1: 1 rArr ` the length of the chords are equal and equal chords are equal and equal chords subtend equal angles at the centre .
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