广西柳州市2021届高三下学期3月第三次模拟考试数学(文)试题 答案
柳州市2021届高三第三次模拟考试文科数学参考答案及评分标准一、选择题:(每小题5分,满分60分)123456789101112CBCADBADDBAB二、填空题:(本大题共4小题,每小题5分,共20分)13.㔨14.515.16.त三、解答题:(本大题共6小题,共70分)17.解:(1)在ABC中,由正弦定理得sinsinaCAc,···················································1分所以条件可转化为2sincostan3aCaCCc,················································...
2024-10-05
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