from a space probe circling Io (one of Jupiter's moons) at an altitude of 552km, it was observed that the angle of depression of the horizon was 39.7degrees. What is the radius if Io?Please don't answer! just need advice on how to find answer.?
Draw a triangle whose sides are (1) from the center of Io to the probe, (2) from the probe to the horizon of Io, and (3) from the center of Io to the horizon point. Then use trig to solve the triangle
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