当前位置:网站首页>高数_向量代数_单位向量_向量与坐标轴的夹角
高数_向量代数_单位向量_向量与坐标轴的夹角
2022-07-06 02:16:00 【ximanni18】
一 单位向量
如果向量 α的模为1, 即|α| =1, 则称α为单位向量。
如果α≠ 0, 记 , α ⁰称之为 α的单位化向量,它的长度为1, 并且有 α = |α| α ⁰
二 向量与坐标轴的夹角
单位向量的三个坐标是向量的方向角余弦。
先看一个定理性质的例题
接着看一个应用的例题
再看一个题目
设向量的方向余弦分别满足: (1) cosa = 0; (2) cosβ = 1; (3) cosa = 0, cosβ = 0. 问这些向量与坐标轴的关系如何?
解:
边栏推荐
- Visualstudio2019 compilation configuration lastools-v2.0.0 under win10 system
- leetcode-两数之和
- Computer graduation design PHP campus restaurant online ordering system
- 爬虫(9) - Scrapy框架(1) | Scrapy 异步网络爬虫框架
- 一题多解,ASP.NET Core应用启动初始化的N种方案[上篇]
- PHP campus movie website system for computer graduation design
- Use the list component to realize the drop-down list and address list
- 论文笔记: 极限多标签学习 GalaXC (暂存, 还没学完)
- The third level of C language punch in
- Leetcode sum of two numbers
猜你喜欢
一位博士在华为的22年
Online reservation system of sports venues based on PHP
Minecraft 1.16.5 生化8 模组 2.0版本 故事书+更多枪械
Audio and video engineer YUV and RGB detailed explanation
剑指 Offer 30. 包含min函数的栈
SQL statement
The third level of C language punch in
零基础自学STM32-野火——GPIO复习篇——使用绝对地址操作GPIO
[solution] add multiple directories in different parts of the same word document
Computer graduation design PHP campus restaurant online ordering system
随机推荐
Thinking about the best practice of dynamics 365 development collaboration
leetcode3、實現 strStr()
I like Takeshi Kitano's words very much: although it's hard, I will still choose that kind of hot life
[width first search] Ji Suan Ke: Suan tou Jun goes home (BFS with conditions)
更改对象属性的方法
Derivation of Biot Savart law in College Physics
Overview of spark RDD
Leetcode3. Implement strstr()
Computer graduation design PHP animation information website
Leetcode3, implémenter strstr ()
729. My schedule I / offer II 106 Bipartite graph
Structural theme model (I) STM package workflow
The ECU of 21 Audi q5l 45tfsi brushes is upgraded to master special adjustment, and the horsepower is safely and stably increased to 305 horsepower
[robot library] awesome robots Libraries
Unity learning notes -- 2D one-way platform production method
Selenium element positioning (2)
Executing two identical SQL statements in the same sqlsession will result in different total numbers
【MySQL 15】Could not increase number of max_open_files to more than 10000 (request: 65535)
【社区人物志】专访马龙伟:轮子不好用,那就自己造!
HDU_p1237_简单计算器_stack