当前位置：首页>课件>【2027届 · 高一 · 必修1 · 课件PPT+Word】第五章 §5.2.2 同角三角函数的基本关系

【2027届 · 高一 · 必修1 · 课件PPT+Word】第五章 §5.2.2 同角三角函数的基本关系

  • 2026-08-22 12:30:38
【2027届 · 高一 · 必修1 · 课件PPT+Word】第五章 §5.2.2 同角三角函数的基本关系

【高一 · 必修1 · 课件PPT】

2026-2027学年高一·必修1（人教A版）课件系列
本文编号：26G1R1KJ062；资料获取方式见文末

【学习目标】

1.理解并掌握同角三角函数的基本关系.(重点)

2.会用同角三角函数的基本关系进行三角函数式的求值、化简和证明.(难点)

【反思感悟】

已知sinθ±cosθ，sinθcosθ求值问题，一般利用三角恒等式，采用整体代入的方法求解，涉及的三角恒等式有：

(1)(sinθ+cosθ)2=1+2sinθcosθ；

(2)(sinθ-cosθ)2=1-2sinθcosθ；

(3)(sinθ+cosθ)2+(sinθ-cosθ)2=2；

(4)(sinθ-cosθ)2=(sinθ+cosθ)2-4sinθcosθ.

本文内容获取方式

1.本文编号：26G1R1KJ062， 售价5元，含有两个文件：①可编辑的PPT格式文件，②可编辑的Word版文件；

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  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001365s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001233s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.004493s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001636s ]
  6. SELECT * FROM `set` [ RunTime:0.000663s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001737s ]
  8. SELECT * FROM `article` WHERE `id` = 526888 LIMIT 1 [ RunTime:0.001111s ]
  9. UPDATE `article` SET `lasttime` = 1787560222 WHERE `id` = 526888 [ RunTime:0.018413s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000601s ]
  11. SELECT * FROM `article` WHERE `id` < 526888 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001171s ]
  12. SELECT * FROM `article` WHERE `id` > 526888 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004477s ]
  13. SELECT * FROM `article` WHERE `id` < 526888 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003305s ]
  14. SELECT * FROM `article` WHERE `id` < 526888 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.007664s ]
  15. SELECT * FROM `article` WHERE `id` < 526888 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.008493s ]
0.216049s