2019年天津高考英语答案及解析，因篇幅所限，不涉及本文研究问题的小问不再呈现，可以多种方法解答的题目只选择一种最简洁的解法呈现，没有呈现的小问及方法，请点击相应的蓝字部分超链接查看.
一、两角不等关系
（一）两角不等关系转化为两边不等关系
天津高考英语试卷难不难,难度系数解读点评答案解析 天津卷英语高考试题进一步体现语言测试的综合性和语境化的特征，所涉及的考查的内容不再只是停留在对语言知识的识记与简单再现，而是要求考生在不同水平与层次上侧重并加强了对。
二、角平分线
（一）椭圆
方法一：两角相等转化为斜率之和为0
方法二：使用角平分线的对称性
（二）双曲线
When Dan Shaw gets up from the sofa in his home, Cuddles is never far away. When he wants to go outside, he doesn’t take Cuddles out for a walk—Cuddles takes him for a walk Cuddles is。
（三）抛物线
方法一：两角相等转化为斜率之和为0（线参法）
It has been estimated that smokers have made up half of the population in China.And the smokers are becoming younger and younger, even ineluding some middle school students.Nowadays more and more people have。
方法三：两角相等转化为斜率之和为0（点参法）
三、两角相等（不涉及角平分线）
One day when I was 12, my mother gave me an order: I was to walk to the public library, and borrow at least one book for the summer. This was one more weapon for her to defeat my strange problem 。
（一）两角相等转化为两直线斜率关系
（二）两角相等转化为两边相等
live each day as if we should die tomorrow. Such an a
四、角度之差的最值
