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A biologist wants to know the width w of a
river in order to properly set instruments for
studying the pollutants in the water. From
point A, the biologist walks downstream l =102 feet and sights to point C. From this
sighting, it is determined that _ = 60_.


How wide is the river?
Answer in units of f

Respuesta :

syed514
Use tangent to solve.
 tan(60 degrees) = O/A
 A = 102
Solve for O
 O = tan(60 degrees)(102)
     = 176.7 ft.

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