Charlie is afraid of water; he cant swim andrefuses to get in a boat. However, he
Chapter 10, Problem 53(choose chapter or problem)
Charlie is afraid of water; he cant swim andrefuses to get in a boat. However, he mustmeasure the width of a river for his geographyclass. He has a long tape measure, but no way tomeasure angles. While pondering what to do, hepaces along the side of the river using the fivepaths joining points A, B, C, and D (see thefollowing figure). If he does not determine thewidth of the river, he will not pass the course.a. Save Charlie from disaster by explaining howhe can determine the width AE simply bymeasuring the lengths AB, AC, AD, BC, and BDand using trigonometry.b. Charlie determines that feet,feet, feet, feet, andfeet. How wide is the river between A and E?
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