
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
 LinkBack  Thread Tools  Display Modes 
January 30th, 2018, 05:33 AM  #1 
Newbie Joined: Dec 2014 From: UK Posts: 11 Thanks: 0  Vector Triangle
Hi all Can someone explain the answer to the attached problem please? Regards Jim 
January 30th, 2018, 05:38 AM  #2 
Senior Member Joined: Oct 2009 Posts: 905 Thanks: 351 
Take $A$ to be the origin. Can you express B and C in terms of a and b? Can you then express M and N in terms of a and b? 
January 30th, 2018, 05:54 AM  #3 
Newbie Joined: Dec 2014 From: UK Posts: 11 Thanks: 0 
I do apologise but you have lost me. Can you be a bit more detailed in your questions please? I do want to worked it out for myself and do appreciate you are trying to point me in the right direction!

January 30th, 2018, 09:25 AM  #4 
Senior Member Joined: Oct 2009 Posts: 905 Thanks: 351 
If AC = 2a, then what is AM? What is the equation of points on the line BC in terms of AC and AB? 
February 3rd, 2018, 11:47 PM  #5 
Newbie Joined: Dec 2014 From: UK Posts: 11 Thanks: 0 
AM = a 3b2a Is that correct? 
February 4th, 2018, 08:59 AM  #6 
Global Moderator Joined: Dec 2006 Posts: 21,105 Thanks: 2324 
$\vec{CB} = \vec{AB}  \vec{AC} = 3\textbf{b}  2\textbf{a}$ Express $\vec{CN}$ as a fraction of $\vec{CB}$. $\vec{MN} = \vec{MC} + \vec{CN} = \textbf{a } +$ . . . 

Tags 
triangle, vector 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Vector surface integral for triangle  kejinatsu  Calculus  3  January 11th, 2017 09:43 AM 
vector as product of matrices, exp function of vector  whitegreen  Linear Algebra  1  June 9th, 2015 07:11 AM 
Vector Calculus Divergence of a Vector Field  MasterOfDisaster  Calculus  2  September 26th, 2011 10:17 AM 
Spherical Vector to Cartesian Vector  tsa256  Algebra  3  August 20th, 2010 08:33 AM 
Complex Number (vector triangle properties)  grandia3  Algebra  2  February 21st, 2009 08:55 PM 