Two parallel roads 26m apart are to be connected by a reversed curve with equal radii at PC and PT. The length of the common radius is 1511m. Determine the length (m) of the chord from PC to PT.

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Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.