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Nata [24]
2 years ago
7

Please help I dont understand

Mathematics
1 answer:
riadik2000 [5.3K]2 years ago
7 0

Answer:

2.1

Step-by-step explanation:

By the Law of Cosines,

a² = 5² + 6² - 2(5)(6)cos(20°)

a = sqrt(5² + 6² - 2(5)(6)cos(20°)), which is about 2.1

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