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江苏作为文化大省,高考试题具有浓厚的地方特色,笔者在此对数学试题中的六大解答题作一简要回顾:一、向量搭桥解三角,巧用公式得全分平面向量中的夹角是引发向量与三角函数交汇的主要因素,它把向量与三角函数有机地综合在一起,使三角问题得到充实与加强,能有效地考查同学们解决综合问题的能力。题型一:结合向量的数量积,考查三角函数的化简或求值。合理选用向量数量积的运算法则构建相关等式,然后运用三角函数
Jiangsu Province as a cultural province, college entrance examination questions have a strong local characteristics, the author of the six questions in mathematics questions for a brief review: First, the vector bypass bridge triangle, clever use of formulas in the plane vector angle Is the main factor that triggers the intersection of trigonometric function and vector. It integrates vector and trigonometrical function organically, makes the triangular problem substantiate and strengthen, and can effectively check the students’ abilities to solve the comprehensive problem. Problem 1: Combining the quantity product of vectors, examine the simplification or evaluation of trigonometric functions. Reasonable choice of vector quantity product of the algorithm to build the correlation equation, and then the use of trigonometric functions