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方程思想是数学中最基本的,也是最重要的数学思想,它遍及数学学科的各个分支.本文谈谈运用方程思想解答有关三角函数的求值类题目.
The idea of equations is the most basic and the most important mathematical thought in mathematics. It covers all branches of mathematics. This article talks about the use of equations to solve the questions about the evaluation of trigonometric functions.