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Calculating the Angles of Depression

  The angle of depression refers to the angle between an object's horizontal axis and its vertical axis. An object's axis of rotation is always in a state of dynamic tension, referred to as angular momentum. The more the angle of depression with respect to the horizontal axis, the higher the object's velocity. Therefore objects which have high angles of depression are going to fly away from you faster than objects with low angles of depression. The figure below depicts this phenomenon in detail. Let us start with the equation. The angle of depression can be written as the slope of the tangent (which is the horizontal axis) to the viewing angle. If we plot this angle against the horizontal axis, we get the tangential component of the angle of position. The slope of the tangent is equal to the cosine of the angle of position. Therefore, when we determine the angle of tilt against the horizontal axis, we find that it is equal to -pi/n where n is the focal length of the optical...

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