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In the following figure, AB is an arc of...

In the following figure, AB is an arc of the circle, C and D are the points on the circle. If `angle ACB=30^@`, Find `angle ADB`.

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Angles made by an arc in the same segement are equal. Angles made by the arc in the segment ADCD are equal.
`therefore angle ADB=angle ACB=30^@` .
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