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在近几年的高考试题及竞赛题中,经常涉及到判断三角形形状的问题,它需要学生熟练掌握三角函数的有关公式并能灵活运用。下面通过问题的已知条件的特点来分析这类题目的解法。
In the high test questions and competition questions in recent years, the question of judging the shape of the triangle is often involved. It requires students to master the relevant formulas of the trigonometric functions and can flexibly use them. The following analysis of the solution to this type of problem is based on the characteristics of the known conditions of the problem.