A river is flowing from West to East. For determining the width of the river, two points A and B are selected on the Southern bank such that the distance AB = 75 m. Point A is Westward. The bearings of a tree C on the Northern bank are observed to be 38° and 338° respectively from A and B. Calculate the width of the river.

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Graphical Methods

The graphical method is a method of solving equations involving more than one variable using the Cartesian coordinate system. In civil engineering, the use of the graphical method is limited to the problems involving two variables. The graphical method has a great impact in solving the questions regarding engineering mechanics.