Given an isosceles dart whose reflex angle is 2015(mod 360) and two longer sides are 2015 units. (i.e. given a dart ABCD, where C is the reflex angle, and there is a line of symmetry AC. AB=AD=2015)

If A is a right angle, round of the shorter side's length to 3 decimal places. (i.e. A=90 degrees. BC=BD=?)

The answer is 1493.965.

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