Final answer:
The geometry problem requires additional information to calculate the distance between buoy markers B and C using trigonometry. The incomplete information provided does not allow for a solution without knowing another side length or the full set of angles in the triangle.
Step-by-step explanation:
The question involves solving a geometry problem related to triangle angles and side lengths. Given that one angle is 60 degrees and the triangle is formed by buoy markers with one side as a 200m swim race course, we need to find the distance between markers B and C. This scenario suggests the use of trigonometric ratios in a triangle, possibly involving the Law of Sines or the Law of Cosines, depending on the additional given angle. However, the provided information is incomplete as it lacks either the full set of angles or the length of another side to apply these laws effectively.
Unless additional information is provided to create a solvable geometry problem, such as the length of another side or the angle opposite to the 200m side, we cannot calculate the distance between marker B and marker C accurately. Trigonometry is essential in solving such problems and finding the distance in such race courses.