Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.)

$ a = 8i - j + 4k , b = 4j + 2k $

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

$84^{\circ}$

01:19

Alan Ghazarians

Calculus 3

Chapter 12

Vectors and the Geometry of Space

Section 3

The Dot Product

Vectors

Johns Hopkins University

Oregon State University

Harvey Mudd College

Boston College

Lectures

02:56

In mathematics, a vector (from the Latin word "vehere" meaning "to carry") is a geometric entity that has magnitude (or length) and direction. Vectors can be added to other vectors according to vector algebra. Vectors play an important role in physics, engineering, and mathematics.

11:08

In mathematics, a vector (from the Latin word "vehere" which means "to carry") is a geometric object that has a magnitude (or length) and direction. A vector can be thought of as an arrow in Euclidean space, drawn from the origin of the space to a point, and denoted by a letter. The magnitude of the vector is the distance from the origin to the point, and the direction is the angle between the direction of the vector and the axis, measured counterclockwise.

0:00

Find the angle between the…

03:35

02:39

01:02

01:04

01:06

01:25

02:43

01:49

01:53

Compute the angle between …

02:35

$15-20$ Find the angle bet…

01:32

01:18

01:30

I'm going to find angle which will look after that is a equals to eight. I'm gonna stay plus four K. So equal to eight I minus of J. And plus a four K. Cap and be able to afford the place to go. So how we can find, we know that eight out B equals nothing but magnitude of in to be in the course of the triangle between them. Right? So obviously the product of these two is just the scalar. So we really want right into four. Right into over here I component and over here I component is zero and 18 to 0. So that would be zero and minus one and plus four to minus four plus four plus two plus eight. Equal to mine to the mentor of his route under 64 plus one plus 16. Okay. In the root under 16 plus four. In the course of tita right? We like mine four equals two. This will be 64 78 81 grouped under 81. The route under 20 I guess. Yeah. In the course of theater. So it will be caused to equals 2009. So I think it will be four upon 9 20. Right. So what will be the value of people? We need to just record that. So we need to how we can calculate that. We need for do you have to buy nine into road 20? So poor divided by 40.24 92 Where? So 40.2492 So poor divided by 40 point 2492 So this caused data that comes out to be nothing but 0.9938 So tita will because in first of 2.2993 Okay, So this will be the value of the court this time. Thanks

View More Answers From This Book

Find Another Textbook

06:44

"w/ solution pls ✊ < i’ll give 59 pts. >02'001

02:29

'pa sagutan nlng po ung maayos salamat poDirections: Write the lett…

00:46

'Hi can somebody help me JAttaleln intls Afan Itis the Partofaline …

02:50

'1. Find m and each angle m 2m-452. Find x and each side7x-8 3x+…

'helppp po please haha no.10 po4 {c > 1810 b - 20 <-10

00:59

'LEARNING TASK 3Direction: Write the measure of the angle in proper not…

02:26

'II. Math Challenge!Mr. Cruz wanted to buy a water container. He is thi…

01:26

'What's NewAre you excited to learn about domain, range and linear…

04:00

"Pls help me with my question Activity 8: LET'S INVESTIGATEI T…

01:54

'What is the following expression:5t - 4r +x2a) monomialb) …