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In the given figure, AB and CD are straight lines through the centre O of a circle. If ∠AOC=80∘ and ∠CDE=40∘ , find (i) ∠DCE, (ii) ∠ABC. |
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Answer» In the given figure, AB and CD are straight lines through the centre O of a circle. If ∠AOC=80∘ and ∠CDE=40∘ , find (i) ∠DCE, (ii) ∠ABC.
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