2025年教学资料:4.5 诱导公式
授课题目 4.5诱导公式 选用教材 高等教育出版社《数学》 (基础模块上册) 授课时长 4课时 授课类型 新授课 教学提示 本课将从具有特殊位置关系的角出发,借助单位圆和三角函数的定义得到诱导公式,通过例题,学习诱导公式在三角函数求值与化简中的作用,以及用诱导公式求任意角的三角函数值,进行简单的化简与证明的一般过程和常用方法.教学目标 知道角2k+α、−α、+α、-α与角α的终边之间的关系,能利用这些角终边之间的关系推导它们的三角函数值的关系,逐步提升逻辑推理等核心素养;能利用诱导公式将任意角的三角函数化为0~2π进而化为锐角的三角函数求解,对某些三角函数值进行求值、化简及简单的证明,...
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