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The Excel Resection by Angles Computation is a surveying calculation method used to determine the coordinates of an unknown point (station) by measuring angles and distances from three or more known points (reference objects or ROs) with known coordinates.

The Excel Resection by Angles Computation

The input data required for this computation include the measured azimuth, the known coordinates of the reference objects (ROs), and the angles observed between the ROs and the unknown point (station).

The computation involves several steps, including converting the measured azimuth to a computed bearing, calculating the interior angles between the ROs and the unknown point, and applying trigonometric functions to determine the unknown point's coordinates.

The computation is performed using an Excel spreadsheet, which simplifies the calculations and allows for easy manipulation of the input data and results.

It is important to note that the known RO coordinates must be entered or observed in a clockwise direction to ensure the correct computation of the interior angles.

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