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
- Multiple solutions to one problem, asp Net core application startup initialization n schemes [Part 1]
- [width first search] Ji Suan Ke: Suan tou Jun goes home (BFS with conditions)
- Number conclusion LC skimming review - 1
- 零基础自学STM32-野火——GPIO复习篇——使用绝对地址操作GPIO
- SPI communication protocol
- Extracting key information from TrueType font files
- Computer graduation design PHP college student human resources job recruitment network
- 好用的 JS 脚本
- leetcode3、實現 strStr()
- Get the relevant information of ID card through PHP, get the zodiac, get the constellation, get the age, and get the gender
猜你喜欢
Overview of spark RDD
Adapter-a technology of adaptive pre training continuous learning
Extracting key information from TrueType font files
2022 China eye Expo, Shandong vision prevention and control exhibition, myopia, China myopia correction Exhibition
Redis list
构建库函数的雏形——参照野火的手册
How to generate rich text online
Use the list component to realize the drop-down list and address list
Jisuanke - t2063_ Missile interception
【MySQL 15】Could not increase number of max_open_files to more than 10000 (request: 65535)
随机推荐
[robot hand eye calibration] eye in hand
Text editing VIM operation, file upload
Using SA token to solve websocket handshake authentication
Concept of storage engine
Campus second-hand transaction based on wechat applet
Executing two identical SQL statements in the same sqlsession will result in different total numbers
Xshell 7 Student Edition
This time, thoroughly understand the deep copy
Online reservation system of sports venues based on PHP
Install redis
[solution] every time idea starts, it will build project
PAT甲级 1033 To Fill or Not to Fill
Global and Chinese markets for single beam side scan sonar 2022-2028: Research Report on technology, participants, trends, market size and share
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
Visualstudio2019 compilation configuration lastools-v2.0.0 under win10 system
[community personas] exclusive interview with Ma Longwei: the wheel is not easy to use, so make it yourself!
Structural theme model (I) STM package workflow
通过PHP 获取身份证相关信息 获取生肖,获取星座,获取年龄,获取性别
Method of changing object properties
Use the list component to realize the drop-down list and address list