平面向量是第一次进入中学数学教材,它是一个很好的工具,应用十分广泛.近年来,三角函数与平面向量的交汇试题逐渐进入高考试卷,并在不断加大考查的力度.下面介绍这种问题的八大常见类型,供大家复习参考.一、求三角函数值例1(2005山东)已知向量m→=(cosθ,sinθ,n→=(2(1/2)-sinθ,cosθ),θ∈(π,2π),且 Plane vector is the first time into high school mathematics textbooks, it is a good tool, is widely used.In recent years, the intersection of trigonometric functions and plane vector gradually into the entrance examination papers, and continue to increase the test intensity. First, find the trigonometric function value Example 1 (2005 Shandong) known vector m → = (cos θ, sin θ, n → = (2 (1/2) -sin θ, cos θ ), θ∈ (π, 2π), and