The deflection angles from PC to two intermediate points (A and B) on a simple curve are 3.6° and 7.2°, respectively. The length of the chord between A and B is 39.77 m. If the back and forward tangents of the simple curve have bearings of S41.2°E and S66.6°W, respectively, determine the length (m) of the chord from PC to the midpoint of the curve.

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