Elevation and Depression with the Sun

Put the black dot on point A, and use the white dot on the other points.

With the black dot on A, what is the angle of depression to point B?

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With the black dot on A, what is the angle of depression to point C?

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With the black dot on A, what is the angle of depression to point D?

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With the black dot on A, what is the angle of depression to point E?

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With the black dot on A, what is the angle of depression to point F?

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Is it possible to find the angle of elevation of point B to point A, using the diagram?