The value of the angles ADB and ABD are 90° and 19° respectively.
From the triangle;
ADB = 90° (Right angle equals 90°)
Sum of angles in a triangle = 180°
ADB + BAD + ABD = 180°
90 + 71 + ABD = 180
ABD = 180 - 161
ABD = 19°
Hence, ABD is 19°
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