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In the given figure, if /A = 2 / B and /...

In the given figure, if `/_A = 2 /_ B` and `/_ ACD = 2 /_ DCB`, then find the measure of `/_ DCB + /_ B` .

A

`60^(@)`

B

`90^(@)`

C

`45^(@)`

D

`75^(@)`

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A
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