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解三角形是新课标高考的必考内容,主要以填空题或解答题17题的形式考查,内容涉及正余弦定理、三角形面积公式、三角与向量、三角与不等式、三角函数、三角与圆锥曲线等.题干通常比较简洁,题目所蕴含的思想却值得回味,在历年高考中,出现了很多精彩的题目.笔者与大家一起重温这些题目所蕴含的解题思想,并且谈谈从中收获的对解三角形一类题的启发.一、同构异解例1(2011辽宁)△ABC中,角A、B、C的对边为a、b、c,
Triangulation is the new curriculum standard college entrance examination exam content, mainly fill in the blank questions or answer questions in the form of 17 questions examines, is concerned with the sine cosine theorem, the triangle area formula, trigonometry and vector, trigonometry and inequality, trigonometry, trigonometry and conic Etc .. The title is usually relatively simple, the ideas contained in the title deserved to be aftertaste, in the calendar year college entrance examination, appeared a lot of wonderful topics .I work with you to review the topics contained in the problem-solving ideas, and talk about the harvest A solution to the problem of a triangular triangle A. First, the same heterogeneous solution Example 1 (2011 Liaoning) △ ABC, A, B, C on the opposite side of a, b, c,