The complex numbers corresponding to points a and B in the complex plane are Za = 3 + 2I and ZB = - 2 + 4I respectively?
Firstly, the coordinates of the points corresponding to Za and ZB are (3,2) and (- 2,4), so | DAB | = √ (3 + 2) ^ 2 + (2-4) ^ 2 = √ 29
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