Beyond what latitude is the view of a geostationary satellite totally blocked by

Question

Beyond what latitude is the view of a geostationary satellite totally blocked by the curvature of the earth (round your answer to the nearest degree)? A picture is essential here to allow you to visualize the geometry of the problem. Once you answer this first question, answer this one: At what latitude would a geostationary satellite never get any higher than 20 degree above the horizon? An angle of 20 degree is chosen because that's about as close to the horizon as a satellite can be and still retrieve a decent image of the Earth.

Explanation / Answer

A geostationary satellite is an earth-orbitingsatellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east).

near poles the view of a geostationary satellite totslly blocked by the curvature of the earth.

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