三角形中最值问题常用解题技巧

Common Solution Skills for the Value Problem in Triangle

三角形中的最值问题,可以考查三角形中的正弦定理,余弦定理,面积公式以及三角函数的诱导公式,提斜公式,恒等变换等知识点,是高考中的重点,也是难点。这类最值问题解决的方法通常有两种,建立目标函数后,可以利用重要不等式解决,也可以利用三角函数的有界性。

the most value problem in triangle can be examined by examining the sine theorem,cosine theorem,area formula and the induction formula of trigonometric function,oblique formula,identity transformation and other knowledge points,which are the key and difficult points in the college entrance examination.There are two ways to solve this kind of most value problem.After establishing the objective function,we can use the important inequality to solve the problem,and we can also use the boundedness of the trigonometric function.