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In DeltaABC, angleB = 70^@ and angleC = ...

In `DeltaABC, angleB = 70^@ and angleC = 30^@`, AD and AE are respectively the perpendicular on side BC and bisector of `angleA`. The measure of `angleDAE` is:

A

`24^@`

B

`10^@`

C

`15^@`

D

`20^@`

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