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Annette [7]
4 years ago
15

Please help. Trig: Laws of Cosines

Mathematics
1 answer:
umka2103 [35]4 years ago
5 0

Answer:

21.4 units

Step-by-step explanation:

Greater angle: 180 - 80 = 100

diagonal² = 14² + 14² - 2(14)(14)cos(100)

diagonal² = 460.0700856454

diagonal = 21.4492444073

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