On top of a mountain 100 meters high, Hubert saw and fell in love with a girl who is at the foot of the mountain. How far is the girl from the mountain if the angle of depression formed by Hubert's line of sight with the horizontal is 48°10' ?

Q: What are the reasons that cause errors in a horizontal angle?

A: Horizontal angle : Horizontal angle is the measure of an angle between two lines originating from…

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A: Given data To find the Azimuth and deflection angles and interior angles of the vertices

Q: Please explain how to find the bearings/azimuths. (Why is it addition or substraction?)

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A:

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Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.