Karl and Shayne are located at point A along a beach and wish to swim to an island, represented by point P. Karl swims directly from point A to point P, a distance of 1750m at a bearing of 297 degrees. Shayne wants to swim no further than 1000m, so he walks along the shoreline at a bearing of 270 degrees to get closer to the island. Determine the shortest distance he must walk, and the bearing he should follow as he swims, so that his swim from B to P is 1000m
