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There is no constant relationship between units of length and units of angle.
By means of trigonometry if you know the angle of elevation or by comparing it with a nearby object if you know its height and shadow length.
There is no constant relationship between units of length and units of angle.
It depends on the time of day because the angle of the sun will determine the shadow length
the angle at which a shadow is formed
The relationship between focal length and angle of view is such that the shorter the focal length, the wider the angle of view. Shorter focal lengths encompass more of the scene in the frame, leading to a wider angle of view.
The length and position of a shadow depend on the angle of the light source, the distance between the object and the surface the shadow falls on, and the height of the object casting the shadow.
The length of a shadow is primarily determined by the angle of the sun in relation to the object casting the shadow. Shadows are longer in the early morning and late afternoon when the sun is lower in the sky, and shorter at midday when the sun is directly overhead. The size and shape of the object casting the shadow also play a role in determining shadow length.
The relationship between the size of a shadow of an object and the distance of light source from the object is indirectly proportional. A short distance will make the shadow big while making the distance long will reduce the size of the shadow.
There is no constant relationship between units of length and units of angle.
As the relationship between the length and angle given are unclear a graphic explanation can be found at the link below
It depends on the angle of the sun. If the sun is at 90 degrees, immediately overhead, then the length of the shadow is 0. What is the angle of the sun?
By means of trigonometry if you know the angle of elevation or by comparing it with a nearby object if you know its height and shadow length.
If you also know its shadow then you can work out the angle of elevation
The shape of a shadow is determined by the direction of the light source and the object casting the shadow. The angle of the light and the distance between the object and the surface onto which the shadow is cast also play a role in shaping the shadow.
Light leaves the lamp and travels in straight lines from its point source. As you move away from the source, the angle between you and the light changes and this the length and position of your shadow changes.
There is no constant relationship between units of length and units of angle.