数学-2024届新高三开学摸底考试卷(天津专用)(参考答案)
2024届新高三开学摸底考试卷(天津专用)数学·参考答案一、选择题(本题共9小题,每小题5分,共45分.在每小题给出的四个选项中,只有一项是符合题目要求的.)123456789DACCCCDDA二、填空题:(本题共6小题,每小题5分,共30分。试题中包含两个空的,答对1个的给3分,全部答对的给5分。)10、11、12、13、14、.15、.三、解答题(本题共5小题,共75分,解答应写出文字说明、证明过程或演算步骤。)16.(15分)【详解】(1)由及正弦定理,得,.......................2分因为,所以,且........................4分又,可得.......
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