2. A tourist at the top of the Gateway Arch (height, 630 feet) in St. Louis, Missouri, observes a boat moored on the Illinois side of the Mississippi River 2070 feet directly across from the Arch. She also observes a boat moored on the Missouri side directly across from the first boat (see diagram). Given that B = cot-17 estimate the width of the Mississippi River at the St. Louis riverfront. 630 ft Boat Boat MO 2070 ft

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter12: Forecasting Travel Demand
Section: Chapter Questions
Problem 15P
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2. A tourist at the top of the Gateway Arch (height, 630 feet) in St. Louis, Missouri, observes a boat moored on the Illinois
side of the Mississippi River 2070 feet directly across from the Arch. She also observes a boat moored on the Missouri side
directly across from the first boat (see diagram). Given that B = cot-1, estimate the width of the Mississippi River at
the St. Louis riverfront.
630 ft
Boat
Boat
MO
IL
2070 ft
Transcribed Image Text:2. A tourist at the top of the Gateway Arch (height, 630 feet) in St. Louis, Missouri, observes a boat moored on the Illinois side of the Mississippi River 2070 feet directly across from the Arch. She also observes a boat moored on the Missouri side directly across from the first boat (see diagram). Given that B = cot-1, estimate the width of the Mississippi River at the St. Louis riverfront. 630 ft Boat Boat MO IL 2070 ft
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