Question 1162448
A sailor is sailing around three islands. She travels 2.6 km from Island A to Island B. She then turns 55 º and travels 2.9 km to island C. How long is the last leg of the trip from Island C to Island A?

a. 8.5 km
b. 2.6 km
c. 2.9 km
d. 1.3 km
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It's a SAS triangle.
Use the Cosine Law.