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Mathematics, 24.05.2021 17:50 TWell

5. In AABC, if a = 8, b = 5, and c= 9, then, based on the Law of Cosines, cosA is​

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5. In AABC, if a = 8, b = 5, and c= 9, then, based on the Law of Cosines, cosA is​...
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