百度试题 结果1 题目【题目】Find the direction angles of the vectorv=i+2j+3k 相关知识点: 试题来源: 解析 【解析】α=cos^(-1)1/(√(14))≈74°, β=cos^(-1)2/(√(14))≈58° , y=cos^(-1)3/(√(14))≈37° 反馈 收藏 ...
Find the angle between the vectors hat i-2 hat j+3 hat k and 3 hat ... 02:58 Find the angle between two vectors vec aand vec bwith magnitudes sq... 01:44 Show that the vectors 2hat(i)-hat(j)+hat(k) and hat(i)-3hat(j)-5hat(k)... 01:57 If vec r. hat i= vec ...
百度试题 结果1 题目Find the vector product of 2 i+ j- k and i-3 j-2 k 相关知识点: 试题来源: 解析 (pmatrix) i& j& k 2&1&-1 1&-3&-2(pmatrix)= i(-2-3)- j(-4--1)+ k(-6-1)=-5 i+3 j-7 k 反馈 收藏
百度试题 结果1 题目Find the sine of the acute angle between the vectors a=2 i+ j+2 k and b=-3 j+4 k. 相关知识点: 试题来源: 解析 (2√2)3 反馈 收藏
Find the area of the parallelogram determined by the vectors i+ 2j + 3kand 3i -2j+k 相关知识点: 试题来源: 解析 http://gallery.fbcontent.cn/latex?decode=false&latex=%24%24%5Cbegin%7Barray%7D%7Bl%7D%0A%5Ctext%20%7B%20Let%20%7D%20%5Cvec%7Ba%7D%3D%5Chat%7Bi%7D%2B2%20%5...
If two vector quantities are coplanar, the angle between those two vectors can be easily obtained by means of graphical or geometrical methods. However, if the vectors are three-dimensional, then the analytical method is the most recommended....
百度试题 结果1 题目Find the angle that each of these vectors makes with the positive x-axis. 2 i+4 j 相关知识点: 试题来源: 解析 63.4^(° ) above 反馈 收藏
Find {eq}\cos (\theta) {/eq} of the angle {eq}\theta {/eq} between the vectors {eq}\vec x,\ \vec y {/eq}. {eq}\displaystyle V = \mathbb R^2,\ \vec x = \begin {bmatrix}-1& 5\\ 2& 2 \end{bmatrix},\ \vec y = \begin{...
2 The points A and B have position vectors 3i+2j and 4i+2j-5k respectively.(a)Find the length of AB.[2] Point P has position vector pi-3k, where p is a constant. P lies on the circumference of a circle of which A B is a diameter.(b) Find the two possible values of...
Finding a publishing agent for young adult books is easier when you know the facts. For example: Which YA publishing agents are looking for new writers? Which publishing agents for young adult literature have the best track record of sales? Which YA book agents accept email, postal mail, and...