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高三年级一轮复习

  • 2026-11-06 20:50:23

高三年级一轮复习
本周第26讲【余弦定理和正弦定理】
了解正余弦定理的推导原由，熟悉正余弦定理公式的运用环境，运用方程的思想结合正余弦定理公式的元素特征合理进行边角互化解三角形（重难突破）注意求解过程结合三角函数挖掘角的隐含范围

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给孩子们的期中英语复习小锦囊:会复习,也要会考试

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  1. CONNECT:[ UseTime:0.000525s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000794s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000424s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000418s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000722s ]
  6. SELECT * FROM `set` [ RunTime:0.000346s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000910s ]
  8. SELECT * FROM `article` WHERE `id` = 539147 LIMIT 1 [ RunTime:0.000534s ]
  9. UPDATE `article` SET `lasttime` = 1793990248 WHERE `id` = 539147 [ RunTime:0.001376s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000482s ]
  11. SELECT * FROM `article` WHERE `id` < 539147 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000637s ]
  12. SELECT * FROM `article` WHERE `id` > 539147 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000443s ]
  13. SELECT * FROM `article` WHERE `id` < 539147 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000768s ]
  14. SELECT * FROM `article` WHERE `id` < 539147 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000904s ]
  15. SELECT * FROM `article` WHERE `id` < 539147 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000772s ]
0.128075s