From two inaccessible but intervisible points A and B, the angles to two triangulation stations C and D were observed as follows: Line AB is 500 m long. Angle CAB = 79 deg 30° Angle DAB = 28 deg 30° Angle DBC = 31 deg 30° Angle DBA = 84 deg 30° 1. Find the distance BC 2. Find the distance BD 3. Find the distance CD

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