2025年教学资料:4.8 已知三角函数值求角
授课题目 4.8已知三角函数值求角 选用教材 高等教育出版社《数学》 (基础模块上册) 授课时长 2课时 授课类型 新授课 教学提示 本课将结合计算工具和诱导公式,学习由已知三角函数值求符合条件的角,学习特殊的三角函数值与[0,2π]范围内角的对应关系,并用运算工具进行有关的三角运算.教学目标 知道由三角函数值求指定范围内的角的原理,能利用诱导公式求出指定范围内满足三角函数值的特殊角,逐步提升数学运算和逻辑推理等核心素养;知道应用计算器求三角函数值的方法,能够应运用计算器求出指定范围内满足三角函数值的角,逐步提升数学运算等核心素养.教学重点 已知特殊角的三角函数值求角.教学难点 掌握已知正弦...
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