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4.4解三角形五年高考考点1正弦定理、余弦定理1.(2023全国乙文,4,5分,易)在△ABC中,内角A,B,C的对边分别是a,b,c,若acosB-bcosA=c,且C=π5,则... 2025-06-25893196.31 KB19页281
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