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DETAILS 20. (-/5 Points ASK YOUR TEACHER A biologist wants to know the width of a river (see pure) in order to properly set i
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Answer #1

Theta = 60 degree
AB = 100 ft
AC = w = ?
Now ABC is a right angle triangle, so
AC/AB = tan60
w = 100* tan60
w = 173.2

Hence width of river = 173.2 ft

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