A Biologist Wants to Know the Width W of a River

question 237

Multiple Choice

A biologist wants to know the width w of a river so that instruments for studying the pollutants in the water can be set properly.From point A the biologist walks downstream $x = 140$ feet and sights to point C (see figure) .From this sighting, it is determined that Find the values o = 54°.How wide is the river (Round your answer to three decimal places.)

• A)212.693
• B)197.693
• C)207.693
• D)202.693
• E)192.693