You stand on the north bank of a river and look due south at a tree on the opposite bank. Your helper  on the opposite bank measures 35 yards due east to a second tree. You must rotate your transit  through an angle of 12 degrees to point toward the second tree. How wide is the river?

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter6: Circles
Section6.1: Circles And Related Segments And Angles
Problem 29E: An amusement park ride the Octopus has eight support arms that are equally spaced about a circle....
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You stand on the north bank of a river and look due south at a tree on the opposite bank. Your helper  on the opposite bank measures 35 yards due east to a second tree. You must rotate your transit  through an angle of 12 degrees to point toward the second tree. How wide is the river?

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