Width A biologist wants to know the width w of a river
Chapter 4, Problem 4.3.79(choose chapter or problem)
Width A biologist wants to know the width w of a river (see figure) in order to properly set instruments for studying the pollutants in the water. From point A, the biologist walks downstream 100 feet and sights to point C. From this sighting, it is determined that . How wide is the river? Verify your result numerically.
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