When a mountaintop is viewed from the point P shown in the
Chapter 0, Problem 71(choose chapter or problem)
When a mountaintop is viewed from the point P shown in the figure, the angle of elevation is . From a point Q, which is d miles closer to the mountain, the angle of elevation increases to . (a) Show that the height h of the mountain is given by (b) If mi, , and , approximate the height of the mountain.
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