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很高興為你 解三角形就是要把所有的未知量(邊和角)都求出來~ 首先由正弦定理得:a=sinA*b/sinB=5√3/3 角C=180-120-30=30度,是個等腰三角形, 根據等角對等邊,所以c=a=5√3/3 這樣解說希望樓主能理解,不清楚的話歡迎追問交流,希望能幫到樓主~
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