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1考纲要求1.理解任意角的概念、弧度的意义,能正确地进行弧度与角度的换算.2.掌握任意角的正弦、余弦、正切的定义,了解余切、正割、余割的定义,掌握同角三角函数的基本关系式.掌握正弦、余弦的诱导公式.了解周期函数与最小正周期的意义.3.掌握两角和与两角差的正弦、余弦、正?
1 syllabus 1. To understand the concept of arbitrary angle, the meaning of radian, can correctly carry out the conversion of radian and angle 2. Master the definition of sine, cosine and tangent at any angle to understand the definition of cotangent, secant and cosect. , Grasp the basic relationship with the trigonometric trigonometric function. Grasp the sine, cosine induction formula. Understand the periodic function and the significance of the minimum positive cycle .3 grasp the difference between the two corners and the sine, cosine, positive?