?An observer stands at a point ????, one unit away from a track. Two runners start at
Chapter 4, Problem 81(choose chapter or problem)
An observer stands at a point 𝑃, one unit away from a track. Two runners start at the point 𝑆 in the figure and run along the track. One runner runs three times as fast as the other. Find the maximum value of the observer’s angle of sight 𝛳 between the runners.
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