Question: 3a. Three airport runways intersect to form a triangle, ABC. The length of AB is 3.1 km, [3 marks] AC is 2.6 km, and

3a. Three airport runways intersect to form a triangle, ABC. The length

3a. Three airport runways intersect to form a triangle, ABC. The length of AB is 3.1 km, [3 marks] AC is 2.6 km, and BC is 2.4 km. A company is hired to cut the grass that grows in triangle ABC, but they need to know the area. Find the size, in degrees, of angle BC.

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