论文部分内容阅读
知识梳理复习比例的基本性质、合比性质和等比性质.复习相似三角形、位似图形的概念及性质,位似与相似的区别与联系.复习锐角三角函数的定义、特殊角的三角函数值及三角函数的关系.“四点”解析难点:利用相似三角形与锐角三角函数的知识解决综合问题.考点:本部分内容以考查比例的性质、相似三角形的判定及性质、特殊角的三角函数值、解直角三角形等内容为主,题型以选择题、填空题为主,也有结合函数、
Review the basic nature of the proportion of knowledge, the nature of proportioning and the nature of the analogy review the concept of similar triangles, bit-like graphics and the nature of the similarities and differences between similarities and contact Review the definition of trigonometric functions, trigonometric functions And trigonometric functions. “Four-point ” difficult to resolve: the use of similar trigonometry and acute trigonometric function knowledge to solve the comprehensive problem.Read: In this section to examine the nature of the ratio, the determination and nature of similar triangles, triangular special angle Function values, solutions of right-angle triangles and other content-based, multiple choice questions to fill in the blank, but also with a combination of functions,