What is the length of segment BD? Round your answer to the nearest hundredth.

triangles ABC and ABD in which the triangles share segment AB and angle B is a right angle, the measure of angle CAB is 34 degrees, the measure of angle BDA is 31 degrees, and the measure of segment AB is 3 units

1.8 units
3.5 units
4.99 units
5.82 units

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