Solve the Problem $115 \mathrm { ft }$ B) $173 \mathrm { ft }$

question 48

Multiple Choice

Solve the problem.
-A conservation officer needs to know the width of a river in order to set instruments correctly for a study of pollutants in the river. From point A, the conservation officer walks 100 feet downstream
And sights point B on the opposite bank to determine that ϴ = 30° (see figure) . How wide is the river
(round to the nearest foot) ?

• A) \(115 \mathrm { ft }\)
• B) \(173 \mathrm { ft }\)
• C) \(50 \mathrm { ft }\)
• D) \(58 \mathrm { ft }\)

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