# 8. Two swimmers, Andy and Becca, begin a race standing 50 feet apart on a shoreline. Becca will swim perpendicular to the shore, while Andy will swim at a 75 angle to the shore. They race toward a buoy in the lake, at point C. 50 ft a = 75 B = 90 sin 75 (a) Which trigonometric ratio: cos 75 can be used to determine the length BC? tan 75 Then, find an exact expression for the length BC, and an approximation rounded to two decimal places. sin 75 cos 75 tan 75 Then, find an exact expression for the length AC, and an approximation rounded to two decimal places. (b) Which trigonometric ratio: Circle one. can be used to determine the length AC? Circle one.