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In the figure given, O is the centre of ...

In the figure given, O is the centre of the circle. `angleDAE=70^(@)`. Find, giving suitable reason, the measure of : (i) `angleBCD` (ii) `angleBOD` (iii) `angleOBD`

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The correct Answer is:
`70^(@)`, `140^(@)`, `20^(@)`
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