My Math Forum  

Go Back   My Math Forum > Science Forums > Physics

Physics Physics Forum

LinkBack Thread Tools Display Modes
June 22nd, 2015, 04:35 AM   #1
Joined: Jun 2015
From: India

Posts: 2
Thanks: 0

A question on Unit Vectors, please help

Let a and b be two unit vectors and p is the angle between them. Then a+b is a unit vector of:

1. p = pi/3

2. p = pi/4

3. p = pi/2

4. p = 2pi/3
raddix is offline  
June 22nd, 2015, 06:02 AM   #2
Senior Member
Joined: Apr 2014
From: Glasgow

Posts: 2,084
Thanks: 699

Math Focus: Physics, mathematical modelling, numerical and computational solutions
Have you tried answering it yet? Have you drawn a diagram with some unit vectors on it?
Benit13 is offline  
June 22nd, 2015, 01:54 PM   #3
Global Moderator
Joined: May 2007

Posts: 6,416
Thanks: 558

Notice that a,b,a+b form an equilateral triangle.
mathman is offline  

  My Math Forum > Science Forums > Physics

question, unit, vectors

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Perpendicular Unit Vectors i and j bilano99 Calculus 2 February 8th, 2012 02:49 PM
Unit Interval vs. Unit Square Cardinality Question miss_direction Real Analysis 2 May 13th, 2011 09:36 PM
2 unit vectors dot product onako Linear Algebra 2 September 23rd, 2010 09:48 AM
Test(s) for random unit vectors idolorand Algebra 0 January 14th, 2010 02:14 PM
orthogonal unit vectors hrc Linear Algebra 6 March 3rd, 2008 02:59 PM

Copyright © 2018 My Math Forum. All rights reserved.