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含有参数的三角函数问题,是近年高考考查热点之一.一般属于逆向型思维问题.正确利用三角函数的性质解答此类问题,是以熟练掌握三角函数的各条性质为前提的,解答时通常将方程的思想与待定系数法相结合.本文结合最近几年高考考查的模式,对求解参数问题进行分类解析.一、根据三角函数图象求解参数
Trigonometric function problems with parameters, is one of the hot spots in the college entrance examination test in recent years, generally belong to the reverse type of thinking. Correct use of the nature of the trigonometric function to answer such questions is based on the premise of the various properties of trigonometric functions, the answer is usually Combining the idea of the equation with the method of undetermined coefficient.This paper classifies and solves the problem of parameter analysis according to the model of college entrance examination in recent years.First, according to the triangle function image to solve the parameter